[HN Gopher] Instinctive Sleeping and Resting Postures (2000)
       ___________________________________________________________________
        
       Instinctive Sleeping and Resting Postures (2000)
        
       Author : alecst
       Score  : 302 points
       Date   : 2024-03-17 00:33 UTC (1 days ago)
        
 (HTM) web link (www.ncbi.nlm.nih.gov)
 (TXT) w3m dump (www.ncbi.nlm.nih.gov)
        
       | imperialdrive wrote:
       | Excellent read right before shuteye.
        
       | verisimi wrote:
       | Really interesting post. It is also quite counterintuitive - I
       | personally think a lot of people are injured in sleep (including
       | myself), and some of the postures indicated look like they could
       | be very challenging/dangerous. Maybe the injuries come from lying
       | on soft mattresses and a hard surface would be better as it
       | provides more immediate feedback of bodily stress..?
        
         | lolitan wrote:
         | Soft mattresses are really not suitable for sleeping. From my
         | experience.
        
       | jiggawatts wrote:
       | Is this considered unusual? I've used minor variations of all of
       | these except the sleeping on the shins posture, and I'm from
       | Europe, not some African tribe.
        
         | arketyp wrote:
         | I very predictably have nightmares whenever I fall asleep flat
         | on my back, sleep paralysis kind of things. In Germanic
         | mythology the mare is a demon who sits on your chest, so my
         | conclusion is that I'm not alone in this.
        
           | twowatches wrote:
           | I can't understand how anyone can sleep on their back. They
           | snore and can't breathe it's like they're dying it's pretty
           | obviously wrong.
        
             | agos wrote:
             | not everybody who sleeps on their back snores and can't
             | breathe?
        
             | saberience wrote:
             | Surprise, surprise, people are different to each other. I
             | pretty much can only sleep on my back, no other positions
             | allow me to fall asleep. Also, I don't snore.
             | 
             | But I'm also very much in shape with no excess weight,
             | snoring is generally correlated with ill health and being
             | overweight.
        
               | kqr wrote:
               | Worth pointing out the false dichotomy here. I sleep
               | better on my side, but I _fall asleep_ better on my back!
               | So ideally I 'd go to bed on my back and then have
               | someone push me over to my side once I'm sleeping...
        
             | toast0 wrote:
             | I'm an expert snorer and can snore in any position.
             | Probably central apnea, which only activates when most
             | comfortable; previous sleep study showed nothing,
             | presumably because I wasn't totally comfortable. I'd self
             | medicate with a cpap if they were sold without a
             | prescription. B1 with dinner/before bed helps, oddly.
             | 
             | Also, my previous cats preferred to sleep on my chest, so
             | they trained me to sleep without a lot of motion.
             | Currenrly, one cat likes to sleep on my legs and overheats
             | them, resulting in a lot of movement at night; the other
             | cat will only briefly visit at night, but will help me stay
             | in place for naps on the couch.
        
         | helboi4 wrote:
         | Yeah fr. The first one he showed I was like, duh... that is the
         | most obvious way to sleep possible
        
       | flurb wrote:
       | When I was 16, I inherited a bit of money. Not a large sum at
       | all, but enough so that I could afford a new bed, a bookshelf and
       | some nick-nacks from my local furniture store. Being 16, I didn't
       | exactly put much thought into how kind my new mattress would be
       | to my back down the line, and so I managed to find the firmest
       | mattress known to man.
       | 
       | At first, it was hard to sleep on, but I'm lazy, and so I kept
       | it. That was a good decision. Today, I have a much softer
       | mattress, and let me tell you, I'm suffering.
       | 
       | Whenever I go camping in the summer, where I'm not in need of any
       | insulation, I usually opt for just a simple, thin, foam sleeping
       | pad, and it works wonder. The first couple of nights it's usually
       | quite rough, not uncomfortable mind you, just hard to sleep as
       | it's not as superficially comfortable, but after the initial
       | acclimation my back's so much better.
        
         | tetris11 wrote:
         | When I was 28 at my peak fitness days, I opted for a firm
         | mattress believing it would strengthen me as I got used to it.
         | 
         | I never got used it. The slightest sound from outside would
         | wake me. Sleeping on the side was a daily chore. I learned to
         | sleep on my back and snore like a lion.
         | 
         | Switched recently a soft mattress with shoulder support. Sleep
         | on my side like a baby.
        
         | taneq wrote:
         | This sounds easy to a/b test. Just sleep on the floor for a
         | month, then your squishy mattress for a month, and document
         | everything. (A month is just a guess, one or two weeks seems
         | like transitional effects would dominate, hopefully after that
         | you'd see more of the ongoing effects?)
        
       | FredrikMeyer wrote:
       | I find this article quite insubstantial. He lists alternative
       | sleeping positions, but no sources backing up the claim that
       | "western sleeping positions" (whatever that is) are worse.
       | 
       | Also only _one_ citation, and that is to back up the claim that
       | there are 200 primates.
       | 
       | Nice pictures though - I feel happy that I can sit (relatively)
       | comfortably in the squatting position (as an European).
        
         | talonx wrote:
         | It's a pity that not more published research is available on
         | this.
        
         | kqr wrote:
         | I think this clause near the end was what made the article make
         | sense to me:
         | 
         | > This observation must be recorded to allow further research
         | in this direction
         | 
         | This is just one person noting in public what could be a
         | correlation, and then all the rest (confirming correlation,
         | establishing causation) is up to someone else!
        
         | roenxi wrote:
         | This appears to be a journal article. Why should it have
         | citations? This is an arena where people are supposed to be
         | doing primary research. "I have a PhD and this is my opinion"
         | is probably at least 20% of academics.
        
           | lou1306 wrote:
           | I can't possibly imagine sleeping posture being such a a
           | pristine research area that there is _no_ prior work on the
           | topic
        
             | roenxi wrote:
             | There is a search bar right above this article if you want
             | to look that research up. This is some physiotherapist
             | recording his opinion; based on field experience. I'm going
             | out on a limb and saying none of the other researchers in
             | the field have been writing about his experience so there
             | isn't anything to cite.
        
           | lazyasciiart wrote:
           | Primary research does not include simply stating "this is my
           | opinion" - and this article also does not consist of someone
           | stating their opinion, it is someone claiming to describe
           | widespread behaviors and explanations for them.
        
           | sowhat389 wrote:
           | Journals publish articles beyond primary research:
           | https://www.bmj.com/about-bmj/resources-authors/article-
           | type...
        
         | looping8 wrote:
         | It also feels a little strange in writing. Examples:
         | 
         | "Figure Figure11 shows a mountain gorilla lying on the ground
         | on his side without a pillow" - Of course it is without a
         | pillow, it's a mountain gorilla! What is this clarification?
         | 
         | "To start with, some Westerners have to hold on to a
         | doorframe." - Would it not be better to say "you may have to
         | hold on" or "newbies"? It is not like Westerners have some
         | special physiological feature that makes them do it, it's about
         | lack of practice.
        
           | kijin wrote:
           | A pillow doesn't need to be a factory-made product that you
           | buy at a store. Plenty of humans make pillows out of natural
           | objects when sleeping outdoors. I can totally imagine a
           | mountain gorilla using a chunk of wood, or even a body part
           | of another gorilla, as a "pillow" if it makes them feel more
           | comfortable.
        
             | helboi4 wrote:
             | Yeah im sure there are many tribespeople with pillows. It
             | feels wierdly racist that this guy is acting like people in
             | societies like this just live instinctually like gorillas
             | and don't actually have the universal human trait of
             | creating and relying on manmade tools.
        
               | chillingeffect wrote:
               | He's viewing humans and gorillas as primates, not viewing
               | tribespeople as gorillas.
               | 
               | Tribes people don't live instinctually. They have
               | culture, like us. The critique here is our culture could
               | benefit from observing how their culture does it.
        
               | throwway120385 wrote:
               | The thing that makes it not racist for me is that he's
               | clearly trying to point out that, as primates, in non-
               | Western surroundings and when not socialized to prefer
               | soft beds with fluffy pillows we tend to adopt similar
               | sleeping positions as other primates do. It would be very
               | racist if he had adopted a sneering "look at the lowly
               | primitives" tone, but he's trying to show that these
               | sleeping positions have helped him immensely and he's
               | suggesting that we might research sleep positioning more
               | as there seem to be differences in the two populations
               | under comparison.
               | 
               | You can look at the COVID pandemic for an example of how
               | body positioning has helped change how well people can
               | breathe. Proning of severely sick patients substantially
               | improved outcomes. That's literally just rolling the
               | patient from their back to their stomach. So there might
               | be something interesting there that we can learn if we
               | pay attention. And he's trying to say "we can learn
               | something from these people if only we pay attention."
        
             | navane wrote:
             | My dog loves pillows. But he doesn't move them. If he's
             | laying down, and a pillow-like object is near, he'll use
             | it. But if the sun moves, he'll move, without the pillow.
        
               | bee_rider wrote:
               | Humans are environment-changers. That's why dogs teamed
               | up with humans. Humans seem to spend a lot of time doing
               | strange and seemingly useless things, like banging rocks
               | together and looking at shiny boxes, but at the end of
               | the day there is always extra food and the environment
               | around humans is full of mysteriously comfortable
               | objects.
        
               | slow_typist wrote:
               | If our dog wants to rest and a fleece or wool blanket
               | happens to be in reach, it will pull it in position (and
               | sometimes even fold it) in order to rest its snout on it.
               | But admittedly it does not move the blanket
               | substantially. I have yet to understand how it decides
               | where to rest though. There is a lot of places and none
               | seems to really dominate the other ones.
        
             | ErigmolCt wrote:
             | In order to protect skin on your face from acne or wrinkles
             | I think it preferable to sleep on a pillow
        
               | malfist wrote:
               | I don't think gorillas are too worried about acne or
               | wrinkles.
        
           | adrian_b wrote:
           | I have read your comment before reading the article, and at
           | that time I have thought that you must be right.
           | 
           | Nevertheless, after reading the article I have seen that the
           | clarification about the gorilla sleeping without a pillow
           | made perfect sense in its context, because it has not been
           | added to provide any additional information, but it was added
           | for emphasis, in a context where the sleeping positions in
           | modern environments were contrasted with their correspondents
           | that are common both in non-modernized environments and for
           | similar primates.
           | 
           | Moreover, I interpret his phrase "To start with" as having
           | the same meaning as your suggestion "newbies".
           | 
           | Using a door frame in the beginning is indeed good practical
           | advice for achieving the full squat position for those who
           | are not used to it.
        
             | watwut wrote:
             | It did not made sense to me, because I am not a gorilla.
             | They have different bodies. They look kinda similar in body
             | shape, but they climb treat the way I will never be able to
             | no matter how much I train.
             | 
             | So, gorila sleeping position implies exactly nothing for my
             | sleeping position.
        
           | helboi4 wrote:
           | Funnily, as a brit, I have always had the ability to sit in a
           | deep squat comfortably and it's not even from tons of
           | practice. I only even realised that its unusual to be able to
           | do and that it may be good for you when I was about 21. By
           | which point there were many people who couldn't do it
           | already. I certainly hadn't been practicing it throughout my
           | teenage years.
        
             | frereubu wrote:
             | I'm a Brit who can squat too, and I think it has quite a
             | bit to do with not weather shoes at home and wearing
             | "barefoot" shoes / zero-drop trainers outside. I have a
             | hunch that it's lengthened my calf muscles and achilles
             | tendons, which makes squatting much more comfortable. I
             | couldn't really do it before switching to barefoot shoes.
        
               | throwaway828 wrote:
               | Having lived in Asia for 10 years I observed that I had
               | gained the ability to squat, quite comfortably too, that
               | I never had on arrival.
               | 
               | Funny old world.
        
           | thaumasiotes wrote:
           | > Of course it is without a pillow, it's a mountain gorilla!
           | 
           | That doesn't follow at all. Gorillas are well known for their
           | habit of making nests. Making pillows isn't difficult.
        
             | elric wrote:
             | Indeed. Many animals build nests. It's not a skill unique
             | to humans at all. Finding something comfortable to rest on
             | isn't a particularly difficult skill to master.
        
             | olalonde wrote:
             | I'm a human and I don't think I'd be able to make a
             | (comfortable) pillow...
        
               | thaumasiotes wrote:
               | Go pull a bunch of grass, and put it in a pile. You now
               | have a working pillow.
        
               | olalonde wrote:
               | That doesn't sound comfortable. I'd probably rather sleep
               | on my arm than a pile of grass...
        
               | avery17 wrote:
               | Im sure if you spent your whole life sleeping on the
               | ground youd work something out to make it more
               | comfortable
        
               | watwut wrote:
               | It can be actually comfortable.
        
               | 082349872349872 wrote:
               | You (most likely) have two comfortable potential pillows
               | distal to your elbows...
               | 
               | (I don't use any of these positions, but I most commonly
               | nap on a heated wooden floor in an insect-free
               | environment. Oddly enough, I also support my temple on
               | the dorsal surface of a wrist; it had never occurred to
               | me that in addition to comfort, it keeps both ears free?)
        
           | jacobolus wrote:
           | > _It is not like Westerners have some special physiological
           | feature that makes them do it, it 's about lack of practice._
           | 
           | Lack of practice _causes_ a  "special physiological feature":
           | ankle inflexibility. For some people it would take a
           | significant amount of time stretching the ankles every day to
           | recover enough ankle flexibility to squat, and that could
           | perhaps still be insufficient, as joint mobility is
           | established based on the range of motion used in childhood.
        
         | NalNezumi wrote:
         | I don't think it's fair to outright dismiss it because it is
         | not a systematic/empirical study (and the author explicitly
         | mention that). In the case of posture, stretching & training I
         | think there's several exercises out there that doesn't have a
         | rigorous empirical study to back it up, yet can be explained to
         | be good/bad from our anatomical understanding of the human
         | body.
        
           | lazyasciiart wrote:
           | Well, unfortunately in this article there are claims that can
           | be explained to be completely false from our anatomical
           | understanding of the human body - such as the idea that it is
           | impossible to snore with your mouth closed.
        
             | ricardobeat wrote:
             | I thought the 'impossible to snore' note was because of the
             | downwards spine position, where the soft palate cannot
             | collapse. Not because the mouth is closed.
        
           | RamblingCTO wrote:
           | > I don't think it's fair to outright dismiss it because it
           | is not a systematic/empirical study
           | 
           | That's how science works. Show sources/data/experiments or
           | gtfo
        
             | roenxi wrote:
             | Science requires a level of common sense and intuition.
             | Famously: https://www.bmj.com/content/363/bmj.k5094
             | 
             | It is fine, indeed should be encouraged, to put some papers
             | in the system that don't have formal data but do record
             | common-sense observations. If people don't like them, then
             | they can trump opinion with data in the scientific process.
        
             | 0xEF wrote:
             | Don't forget the "repeat" part. Sources and data are great,
             | but if they can't be replicated by others, the it's not
             | verifiable.
        
             | NalNezumi wrote:
             | That's how _some steps of the_ science work, specifically
             | the empirical studies. Empirical validation,
             | falsifiability, and repeatability is all in that ball-park.
             | But it 's a part of the process and not all of it.
             | 
             | If that's the only thing you want to consider, sure. As a
             | layman it's probably a good principle, and more so in
             | engineering. But you'll have to shave off some significant
             | works of science from history if you do that.
             | 
             | You can read more about those steps at
             | https://en.wikipedia.org/wiki/Scientific_method
        
             | mo_42 wrote:
             | Einstein and Higgs predicted phenomena that were tested
             | years resp. decades after their publication.
             | 
             | A theory is also a contribution to a field as long as it
             | tested (not necessarily in the same publication).
             | 
             | Even an observation to a field can be a contribution if it
             | helps people generate new theories and then test them.
        
               | guappa wrote:
               | In their defence: building a particle accelerator is a
               | harder and more costly task than watching people sleep.
        
             | chillingeffect wrote:
             | Experiments are the part people fixate on. Science begins
             | with observation.
        
               | RamblingCTO wrote:
               | Yes. But just publishing your observations is not enough.
               | And this seems to be a published paper, which I find very
               | weird.
        
               | diydsp wrote:
               | First, you might want to refresh your understanding of
               | the scientific process. Its first step is
               | "Observation/question."
               | https://en.wikipedia.org/wiki/Scientific_method
               | 
               | Next, the acceptability of journal papers without
               | conclusive experiments varies across fields. In some
               | fields, such as observational sciences (e.g., astronomy,
               | ecology, sociology), observational studies are common and
               | valuable contributions to the literature. These studies
               | often involve collecting and analyzing data from real-
               | world observations, surveys, or existing datasets without
               | the need for controlled experiments. In such cases, it is
               | perfectly acceptable to publish papers based solely on
               | observational data.
               | 
               | When you say, "is not enough," the question I respond
               | with is "enough for what?" It's fully acceptable to
               | publish a paper with observations in order to stimulate
               | interest and encourage further research in the area. It's
               | not necessary for a journal to require final results.
               | 
               | Finally, consider some of these famous and important
               | papers which were published as observations without
               | conclusive results. Should they have held back and waited
               | until conclusive results were available?
               | 
               | 1. Edwin Hubble's "A Relation between Distance and Radial
               | Velocity among Extra-Galactic Nebulae"
               | 
               | 2. Albert Einstein's "The Foundation of the General
               | Theory of Relativity"
               | 
               | 3. Charles Darwin's "On the Origin of Species"
        
         | begueradj wrote:
         | As a North African, I instinctively understand and firmly
         | believe everything mentioned in this article about sleeping is
         | true.
         | 
         | From my perspective, the way I see your comment is this: give
         | me scientific evidence that walking is beneficial to my health.
         | 
         | We lose our identity when we disconnect from Nature. I even
         | read a post recently here in HN where it was said that "Urban
         | humans have lost much of their ability to digest plants":
         | https://arstechnica.com/science/2024/03/human-gut-bacteria-t...
         | 
         | That's where we are.
        
           | jawns wrote:
           | > I instinctively understand and firmly believe everything
           | mentioned in this article about sleeping is true.
           | 
           | Well, yes, but that's a standard quality of B.S. It's
           | plausible, and intuitive. When you actually start trying to
           | prove it out, though, you discover it's wrong.
           | 
           | True, there is a category of "no duh" scientific findings,
           | like walking is beneficial to one's health, that do align
           | with our intuition. But where science really shines is when
           | the evidence points to something counterintuitive.
        
             | GuB-42 wrote:
             | Even the "walking is beneficial" part is not just "duh".
             | 
             | I mean, what is "walking". What distance? What pace? There
             | are negative health effects from walking too much. The
             | general idea is that moderate exercise is the best, too
             | little is bad, too much is also bad. But where is the peak?
             | It seems that walking is beneficial to the average city
             | dweller, which aligns with our intuition, but what about
             | foot soldiers?
             | 
             | And where does the intuition that walking is beneficial
             | comes from? Walking is tiring, it is not something we do
             | naturally if we can avoid it, not very "intuitive". That's
             | the problem by the way, because we can avoid it in modern
             | society. I think the intuition comes from the fact that we
             | get told over and over than walking is beneficial, so much
             | that we made these thought our own, i.e. that's
             | conditioning. And the reason we are told that is because it
             | is backed by observation and science.
        
             | navane wrote:
             | Freakonomics!
        
         | spaceman_2020 wrote:
         | The poor people in my country squat when they're resting. I was
         | taught early on as a kid that I shouldn't sit like that because
         | that's what "poor people do".
         | 
         | I really regret listening to that piece of advice. As I observe
         | my baby daughter, I realize how natural that squatting position
         | is, and how much knee and hip mobility we really have.
        
           | fredrikholm wrote:
           | Often the limiting factor is ankle mobility, as not being
           | able to drive the knee in front of the toes means falling
           | backwards as the center of mass never reaches mid foot.
           | 
           | It's why weightlifters have elevated heels, and why great
           | squatters tend to have short femurs (and/or be short in
           | general).
        
         | whalabi wrote:
         | Yeah I had the same response. He makes lots of anecdotal claims
         | about tribespeople's back trouble but where's the data? It's
         | mildly interesting nonetheless.
        
         | IncreasePosts wrote:
         | There's also so much talk about penis protection, I would love
         | to know if women use different sleeping positions at different
         | rates than men
        
         | sandspar wrote:
         | I'm not saying it's an either/or choice, but I'd rather trust
         | articles written by obsessed old dude experts rather than
         | articles written by "publish or perish" academics citing 100
         | other p-hacked "publish or perish" articles.
        
       | talonx wrote:
       | Very interesting. The author of the paper is around, at least
       | according to the internet, at 90+ years of age and still
       | practising physiotherapy.
        
         | ajb wrote:
         | And is also totally blind! [1] Which must have made taking
         | these observations much harder.
         | 
         | [1]https://www.csp.org.uk/frontline/article/thank-you-csp
        
         | danjc wrote:
         | Also thought that but the article is dated 2000.
        
           | talonx wrote:
           | Yes, but there is a report of him being around around 2022
           | also - https://web.archive.org/web/20220128114020/https://why
           | y.org/...
        
       | kasperni wrote:
       | Also, tribespeople don't spend most of their waking time sitting
       | in front of a computer or TV.
        
       | kurren wrote:
       | These and other anthropological elements are very well described
       | by Esther Gokhale as the basis of her method (which has been a
       | life changer, at least for me).
       | 
       | You can find more on her website or book "8 Steps to a pan-free
       | back".
        
       | twowatches wrote:
       | I'm fairly sure the cause of back pain is sitting at desks, not
       | the position I'm sleeping in.
        
         | safety1st wrote:
         | I'm skeptical that there's anything especially unhealthy about
         | sitting at a desk even for long periods of time. What's more
         | plausible to me is that back pain comes from having a weak back
         | and it's more about what you're _not_ doing, which is training
         | your back muscles. Over the course of about a year, weight
         | lifting eliminated a range of aches and pains I 'd developed
         | throughout adulthood, including back, wrist and knee pain. For
         | the back it's all about deadlifts. In hindsight it seems
         | obvious, all the muscles supporting my spine are visibly larger
         | and demonstrably more powerful, carrying my body around is a
         | much easier job for them now. Sinking into a padded chair after
         | a few big lifts also feels fantastic and now feels like a perk
         | of my job lol
        
           | helboi4 wrote:
           | I dunno. I never had chronic back or neck pain until I
           | started working office jobs. When I was at university, I
           | spent periods sitting at desks, but was never strapped to one
           | for 8 hour shifts. I would sit down at a desk for max 4 hours
           | at a time apart from during extreme crunch periods, and would
           | spend the rest of my day walking around, lounging and
           | chilling in different positions, excercising, etc. As soon as
           | I started working at an office it became noticably harder to
           | reach an over-10k step count daily, and even though I
           | continued going to the gym and doing heavy back days, my left
           | trap has become completely hardened up, and I've occasionally
           | had lower back pain too during stressful times. I'm totally
           | unable to train upper traps because they are literally like
           | bricks. When I have a weekend where I walk and lounge a lot,
           | or am off sick, or go on holiday, my traps feel significantly
           | better and my workouts are better. It's a lifestyle where you
           | are unnaturally in one position for too long that causes
           | this.
        
           | Notatheist wrote:
           | >I'm skeptical that there's anything especially unhealthy
           | about sitting at a desk even for long periods of time. What's
           | more plausible to me is that back pain comes from having a
           | weak back
           | 
           | I figure few habits will give you a weaker back than sitting
           | at a desk for longer periods of time.
        
           | anentropic wrote:
           | Yeah I think it's exactly this.
           | 
           | A lot of people end up thinking it's about ergonomic chairs.
           | An un-ergonomic chair will make things bad pretty quick, but
           | supportive ergonomic chairs are part of the long term problem
           | IMHO.
           | 
           | And deadlifts are not the only solution. I started out using
           | just a backless stool and it helped a bit (can't slouch!),
           | but what really sorted me out was using the "lumbar machine"
           | at the gym for a couple of years. When Covid came along I
           | couldn't go any more so I started doing "the plank" at home,
           | that plus the "side plank" and some push ups have kept me
           | going the last four years. And it's totally free and I can do
           | them basically anywhere e.g. on holiday.
        
             | kqr wrote:
             | > A lot of people end up thinking it's about ergonomic
             | chairs. An un-ergonomic chair will make things bad pretty
             | quick
             | 
             | I'm still fairly young so I probably shouldn't be so quick
             | to say - maybe I'll have to eat my hat in the next decade
             | or two - but I feel like this is also one of those "it's
             | not the thing but how you use it" type situations. I have
             | always used un-ergonomic fairly spartan wood chairs and
             | stools without problem.
             | 
             | What I do, that I don't see everyone else do, is adjust my
             | position a lot. Since I find the chair slightly
             | uncomfortable, I have like a million different positions I
             | can sit in and I rotate through them naturally throughout
             | the day. I haven't seen any science on it but it would make
             | sense that variety helps prevent damage caused by prolonged
             | exposure to one position.
        
               | safety1st wrote:
               | That might help to some degree, but I bet actually
               | exercising your back muscles regularly will have a larger
               | effect.
               | 
               | I mean I'm sure of it. It seems like common sense we've
               | forgotten. Stress the muscles, eat a generous amount of
               | protein, they will grow and get stronger. Do stuff that
               | doesn't stress them as much, they will stay weak and that
               | will lead to complications.
               | 
               | Similar to how the discussion around obesity has become
               | so complicated, in a country where the #1 cause of death
               | is heart disease. It is not complicated, obesity leads to
               | heart disease, to reduce your risk, you must become less
               | obese. Yet we insist on complicating the topic.
        
       | awongh wrote:
       | It's crazy to think about how little we actually know about how
       | the human body functions- not even to say what an "optimal" sleep
       | position might be, but even a high quality study on how different
       | sleep positions might affect the physiology of the body. I have
       | yet to find any real serious scientific analysis of this.
        
         | boffinAudio wrote:
         | The Soviets tried, but we didn't want to hear what they had to
         | say:
         | 
         | https://bldgblog.com/2007/02/sleep-labs-of-the-soviet-empire...
        
         | lukan wrote:
         | "not even to say what an "optimal" sleep position might be"
         | 
         | As with most things, maybe there isn't one optimal solution,as
         | otherwise we all would have found out about it, by now and all
         | use it?
         | 
         | Human bodies and minds are quite different.
         | 
         | So what is comfortable to one person might not work for the
         | next person. Maybe people have pain in the back or in the neck,
         | forcing them into other positions. People with stomach problems
         | rather lie on their stomach. Some people people sleep alone,
         | others together.
         | 
         | I know my sleeping position varies a lot and there is no single
         | best one for me.
        
       | contrarian1234 wrote:
       | I love sleeping in the "lookout posture". I get very restful
       | sleep. However after a couple of days it leads to a lot of pain
       | in my back. I'm guessing some tendons get overstretched. No idea
       | how to work around it though
       | 
       | I should try the reverse with the elbow outward. Seems doable.
       | The Tibetan kneel seems a big too hardcore though :)
        
         | kqr wrote:
         | I have actually used that Tibetan kneel once! I was exhausted
         | and had to sit on the floor for a while and then I just fell
         | asleep like that. It surprised me enough that I've tried to
         | recreate it but it seems I can only do it when I'm _really_
         | tired.
         | 
         | Maybe it's a matter of habit and I can learn to do it if I try
         | often enough.
        
       | tejtm wrote:
       | @dang please macro expand previous
       | 
       | https://news.ycombinator.com/item?id=18024260 Sept 19, 2018
       | 
       | https://news.ycombinator.com/item?id=32531484 Aug 20, 2022
        
       | delichon wrote:
       | I bought a very strange mattress six months ago. This isn't an
       | advertisement -- I can't strongly recommend it -- but it's called
       | SONU Sleep. It has a "channel" along the top that you can lower
       | your arm into when sleeping on the side. I got it due to
       | persistent shoulder pain from side sleeping. Gradually I've
       | adjusted to it and am now sleeping better.
       | 
       | But that's an argument against my usual paleo heuristic: this
       | sure isn't how we evolved to sleep over millions of years. I
       | wonder if I'd sleep well in orbit.
        
         | anonu wrote:
         | If you're sleeping better, why cant you "strongly recommend"
         | it?
        
       | vasco wrote:
       | > Forest dwellers and nomads suffer fewer musculoskeletal lesions
       | than "civilised" people
       | 
       | > I tried to carry out surveys to collect evidence but they were
       | meaningless, as tribespeople give you the answer they think you
       | want.
       | 
       | Could they simply have higher thresholds for complaining?
        
         | leoedin wrote:
         | They're also incredibly active compared to any "civilised"
         | people. There's a lot of evidence that sedentary lifestyles are
         | bad for bodies.
         | 
         | Presumably they're also, on average, younger than "civilised"
         | peoples. Life expectancy for an Amazonian Tribe was just 53
         | years. https://www.sbs.com.au/food/article/how-to-eat-like-an-
         | amazo...
         | 
         | Muscle and joint issues are a symptom of aging. If nobody's
         | making it to 60, then aging really isn't the same issue.
        
           | kqr wrote:
           | Life expectancy of 53 does not usually mean nobody makes it
           | to 60. In the early 1900s[1], life expectancy at birth in
           | England was 53, but at the same time, as long as you survived
           | until you were 20, your life expectancy had increased to over
           | 60. If you lived to 50, you could expect to become 70.
           | 
           | https://ourworldindata.org/images/published/Life-
           | expectancy-...
           | 
           | ----
           | 
           | [1]: Not counting the years of the Spanish flu!
        
             | matthewfcarlson wrote:
             | To the parents point, you sort of made their point. "If you
             | made it to x". By having fewer older members of their
             | population they likely had few joint problems reported
             | overall. I would expect any reasonable study to control for
             | this variable but a survey would not.
        
             | chaorace wrote:
             | Life expectancy is such a consistently deceptive
             | measurement that I often wonder why it's not been replaced.
             | Surely there must be more useful ways of quantifying
             | lifespans, something like a "median age of currently living
             | people"?
        
               | kqr wrote:
               | Point estimates in general are deceptive. It's difficult
               | to capture the nuance of a full distribution with a
               | single number.
               | 
               | I've had some luck with upper and lower percentiles, e.g.
               | 5 % and 95 %. These cover 9 out of 10 people, which is
               | large enough to be meaningful, yet not so small it's
               | difficult to estimate.
        
           | virtualritz wrote:
           | This is probably because of child mortality etc.
           | 
           | I.e. the conclusion that people there don't usually live past
           | 60 seems like a fallacy.
        
             | cma wrote:
             | That is part of it, but there would also be things like
             | high mortality during childbirth, and lack of antibiotics
             | there at that time.
        
               | AlecSchueler wrote:
               | At the same time you have no car crashes or other post-
               | industrial dangers.
        
               | dukeofdoom wrote:
               | But you also were much more likely to farm and hunt and
               | do manual labor. All much more dangerous than office
               | chair
        
           | phyzome wrote:
           | Reminder that "life expectancy" is a useless metric if you
           | don't specify the base age. Life expectancy at birth, at 5
           | years, at 15 years?
        
         | GlenTheEskimo wrote:
         | They sure seem to complain a lot about insects on their penises
        
           | bee_rider wrote:
           | How many times do you think somebody's penis has to be
           | attacked by insects before preventing that becomes the main
           | "figure of merit" for evaluating sleeping positions? I think
           | it is not very far from 1 time.
        
       | danw1979 wrote:
       | I'm sure there are some great points in this paper but this bit
       | of un-evidenced bit of speculation turned me off:
       | 
       | > It has been noted that guide dogs working in towns breathe the
       | same pollutants as humans yet do not have asthma. Could this be
       | because when they lie on their chests the kickback from the upper
       | ribs keeps the corresponding vertebrae mobile, allowing the
       | sympathetic system to work efficiently?
       | 
       | Or could it be one of the many other physiological differences
       | between humans and dogs ?
       | 
       | I think the author notes that this is mostly a collection of
       | anecdotal observations, but linking a primarily inflammatory
       | disorder like asthma with musculoskeletal problems is a bit far
       | fetched in my layman's opinion. Sounds a bit like chiropractic
       | quackery to me.
        
         | dmix wrote:
         | He lists his profession as a physiotherapist so probably
         | crossed into the chiropractic side a bit, some of his personal
         | photos are a little hippy-ish.
         | 
         | The article is also premised on one large appeal to nature
         | (tribal people untainted by modern society do it therefore it
         | is natural and therefore good).
         | https://en.wikipedia.org/wiki/Appeal_to_nature
        
           | tlb wrote:
           | Appeal to nature is bad as a source of ultimate truth,
           | "nature does it this way therefore it must be better." But
           | it's good as a source of hypotheses, "nature does it this
           | way, perhaps we should try it?" This paper seems more like
           | the second.
        
         | Townley wrote:
         | Also notable: some dogs do get asthma, and cats have asthma
         | commonly
         | 
         | https://www.webmd.com/pets/cats/asthma-symptoms-cats
        
       | admissionsguy wrote:
       | To add to the anecdotes, I have been sleeping on a flat rice
       | straw tatami matt (without anything else) for 2 months. It's
       | pretty hard and I have bruises on my ribs, but I have way less
       | back and neck pain than before. I usually fall asleep in position
       | similar to Figures 4 and 5 in the paper.
       | 
       | The reason I started doing this is that after moving to a new
       | house I bought an expensive memory foam mattress which made my
       | back hurt every morning.
        
       | onetimeuse92304 wrote:
       | For my entire life I slept in one of those postures ("the
       | lookout"). I had a bunch of problems (pain in the chest, pain in
       | the back, some problems with my knees not loaded symmetrically,
       | my feet getting "extended" for quite a long time causing problems
       | with Achilles). I also had a problem with restlessness -- these
       | positions cannot be maintained for long without moving, I would
       | be changing my position very frequently.
       | 
       | Couple of years ago I have injured my ACL and had to learn to
       | sleep on my back. Now I am much happier sleeper. Now I generally
       | do not move at all during night (I wake up exactly as I have
       | fallen asleep and my sleep tracker tracks way less movement). All
       | of the pains gone.
        
         | nightowl_games wrote:
         | Pillow or no pillow? Hard mattress? No mattress?
        
           | onetimeuse92304 wrote:
           | I use a very thin pillow when sleeping on my back. I find
           | sleeping without pillow a bit uncomfortable. Although I am
           | sure I could get used to my head being pushed back a bit, I
           | still dislike the head just resting on the hard mattress and
           | trying to naturally roll left/right. The pillow helps me keep
           | my head looking straight ahead (almost vertically).
           | 
           | As to mattress, I prefer a mid-to-hard latex mattress with a
           | cover.
        
             | johnmaguire wrote:
             | In the article, the lookout position involves the lack of a
             | pillow. One can imagine that the additional height of the
             | pillow would cause you to raise your head, lower your
             | chest, and arch your back, potentially causing the issues
             | you reported.
             | 
             | That being said, this is an article of anecdotal
             | observations by a physiotherapist - it is not the result of
             | any kind of study.
        
               | onetimeuse92304 wrote:
               | It is really thin pure goose down pillow. Folded, it is
               | less than 1/4in when compressed. I don't think the height
               | of the pillow makes a huge difference.
        
               | johnmaguire wrote:
               | (This is my preferred type of pillow as well - an old,
               | thin down one - and I can tell the difference when I
               | sleep with or without it.)
        
         | rapunkill wrote:
         | As a back sleeper, get a pillow or cushion under your
         | knees/legs. Otherwise the arch of your back is in constant
         | stress when you sleep and can lead to back problems. You can
         | guess how I know.
        
       | pcrh wrote:
       | Amazing demonstrations of casual racism in that article. It reads
       | as if it was written in 1850 rather than 2000.
       | 
       | There's no plausible reason to suppose that Tibetans or
       | "tribesmen" have more natural sleeping positions than "civilized"
       | (i e. White) people.
        
         | lonelyasacloud wrote:
         | > There's no plausible reason to suppose that Tibetans or
         | "tribesmen" have more natural sleeping positions than
         | "civilized" (i e. White) people.
         | 
         | So Tibetan tribal society is likely to have exposed its members
         | to the same level of furniture and mattress adverts as the
         | average American or European then?
        
           | pcrh wrote:
           | Tibetans traditionally sleep on beds that are not much
           | different from European beds.
           | 
           | The porters shown in the article are "camping", so to speak,
           | i.e. _not_ in their typical sleeping postures.
        
       | dsalzman wrote:
       | The interesting point of this article to me is not the positions
       | but the sleeping surface. Due to my newborn I've been sleeping on
       | the floor on a thin yoga mat for over three months and my back
       | and joints feel great. The pressure from the hard ground is like
       | stretching while you sleep. Took a few weeks to get used to it
       | though.
        
         | sameoldtune wrote:
         | I have a Japanese futon mat[1] under my bed that I roll out if
         | I have muscle soreness. If it weren't for my partner (who
         | insists on sleeping in a bed) I would sleep on the floor 100%
         | of the time. After getting used to floor sleeping I can never
         | feel truly relaxed in a bed-I feel like the padding is putting
         | pressure on my lumbar spine.
         | 
         | [1] https://www.futonbedsfromjapan.com/
        
       | itronitron wrote:
       | The text referencing Figure 2 seems to mistakenly swap the top
       | and bottom images.
       | 
       |  _When the legs are in the reverse recovery position (fig
       | (fig2,2, bottom), the penis lies on the lower thigh and is
       | protected. In this position the Achilles tendon of the leading
       | foot can be inserted in the gap between the big toe and the first
       | lesser toe to help correct a bunion._
       | 
       | Note that the top picture in Figure 2 shows the Achilles tendon
       | of the leading foot between the big toe and adjacent toe of the
       | trailing foot. I would conclude then that the top position is
       | actually the one that protects the penis.
        
         | wizzwizz4 wrote:
         | Figure 1 also has the images the wrong way around, though it's
         | harder to see because they're meant to be side-by-side. I think
         | it's a problem with the HTML conversion.
        
       | ano-ther wrote:
       | This came up on HN a while ago already. I tried it out and found
       | that quadrupedal lying (fig 5) did help my lower back pain.
        
       | hnbad wrote:
       | It's odd that the paper goes to great lengths to talk about
       | protecting your penis from insects but at the same point seems to
       | ignore women completely - all the illustrations depict men.
       | Having met women (shocking, I know), bust size can be a
       | significant factor in ergonomics so it would be interesting to
       | see how that factors into it. Also anecdotally, pregnant belly-
       | sleepers frequently rely on cushioning and people may prefer
       | certain sleeping positions after having given birth or suffering
       | from certain ailments. I'm also certain that waist size (esp.
       | obesity) may alter preferences.
       | 
       | It's an interesting paper but given the lack of substance this
       | feels more like a school presentation than something you'd find
       | in an academic journal.
        
         | kqr wrote:
         | > Also anecdotally, pregnant belly-sleepers frequently rely on
         | cushioning
         | 
         | I mean, undergoing pregnancy is in and of itself not great for
         | one's health (especially without modern healthcare), so I don't
         | know how much that specific thing should be factored into
         | healthy lifestyle choices.
         | 
         | In particular, pregnancy puts a lot of pressure on internal
         | organs in a way that means one should not be surprised to have
         | only one working sleeping position by the third trimester. At
         | that point it's governed by Newton and another growing human,
         | not choice.
         | 
         | (To be clear, I'm not saying pregnancy is a bad lifestyle
         | choice, just that pregnancy is not kind to the human body.)
        
           | hnbad wrote:
           | > I don't know how much that specific thing should be
           | factored into healthy lifestyle choices.
           | 
           | I'm pretty sure the average human is _not healthy_ , even in
           | the societies analysed, especially if you factor in injuries,
           | disabilities or pregnancy. If anything the perfectly
           | "healthy" able body is the exception to the human experience.
           | 
           | So yes, if we want meaningful advice on healthier sleeping
           | postures we should take various illnesses, disabilities,
           | ailments and conditions into account.
           | 
           | At least this seems like a fair consideration if we already
           | dedicate this much text to reducing the risk of insect bites
           | on your penis.
        
         | kaitai wrote:
         | Yes, I wondered about this as well. I understand why the author
         | might not have observed women sleeping, and certainly wouldn't
         | have photos, but one might at least mention it (especially
         | given all the attention to the penis). Bust size & placement
         | for sure has a significant effect on where arms can be placed,
         | among other things.
         | 
         | It seems that the author's observations are primarily from
         | various camping-equivalents, more so than home life.
         | 
         | To my sibling commenter, whether pregnancy is or isn't
         | "healthy" isn't quite the point, IMO. Various stages of
         | pregnancy do occupy a non-trivial part of many people's
         | lifespan and significantly change the ergonomics of sleep.
         | Given that humans have been getting pregnant for a long time,
         | it is a big miss to not even mention that it hasn't been
         | considered. Academic training tries to impress on most authors
         | that they should mention what they're ignoring and why, not
         | least to set up the citation train for the future and support
         | grant applications.
        
       | btbuildem wrote:
       | The Tibetan caraveneers sleeping on their shins is metal af.
       | 
       | As a bonus, in that position, the penis is protected from
       | instects.
       | 
       | Did that little observation, erm, stand out to anyone else?
        
         | malfist wrote:
         | Penis and insects are mentioned in quite a few places in the
         | study. Author seems very preoccupied with that.
        
         | orthoxerox wrote:
         | You never think about ants crawling up your urethra until one
         | of them tries.
        
       | Izkata wrote:
       | The images for Figure 2 are reversed. Both the caption and the
       | description in the paragraph below refer to the bottom image
       | while describing the top one.
        
       | ErigmolCt wrote:
       | "Pillows are not necessary". It is but good position in sleep
       | depends on an individual itself. Some people find pillows
       | essential for comfort and proper spinal alignment
        
       | bee_rider wrote:
       | IMO it would be better for the government to keep this sort of
       | general library content on a url that doesn't contain NIH. They
       | have the disclaimer,
       | 
       | > As a library, NLM provides access to scientific literature.
       | Inclusion in an NLM database does not imply endorsement of, or
       | agreement with, the contents by NLM or the National Institutes of
       | Health.
       | 
       | Anyway, it seems like an interesting collection of anecdotes that
       | would be a good place to start searching. I don't see as much
       | value in some of his speculations. The bit about dogs not getting
       | asthma seems a little out of scope.
       | 
       | Actually, do dogs get asthma? Quick googling seems to provide
       | contradictory answers, with the general trend that apparently
       | cats get it more often, and apparently dogs get some sort of
       | allergic reaction thing that is technically not asthma, but is
       | very similar?
        
         | anonu wrote:
         | > keep this sort of general library content on a url that
         | doesn't contain NIH.
         | 
         | Why? The author makes it clear its purely anecdotal. Someone
         | might come across this and decide to do a further, more
         | scientific study. I would argue that this is valuable content
         | that could lead to better insights on our sleep. Not having it
         | on the NIH website would make it less likely to be viewed.
        
           | hn_throwaway_99 wrote:
           | Because inclusion on the NIH website, in the same general
           | format as peer-reviewed articles are given, can give it the
           | aura of being promoted or at least vetted by NIH, even with
           | the disclaimer.
           | 
           | If you look through Snopes there are tons of examples of
           | hoaxes and false gossip that end up spreading because they
           | are found on an "official" website (or official-looking
           | website), even if that official website is just a library
           | where anyone can publish.
        
         | hn_throwaway_99 wrote:
         | Totally agreed. I also liked some of the anecdotes in this
         | article, but I always have to do an eye roll when I read an
         | article that claims that "primitive" cultures don't suffer from
         | disease X, and look they do thing Y that modern cultures don't,
         | so of course thing Y must be the the reason for the difference!
         | Conveniently ignoring the 6387 other stark differences in
         | culture, behaviors and diets between the cultures.
         | 
         | I think the hypothesis of how sleeping positions affect back
         | pain would be worth studying, but that's all it is, a
         | hypothesis.
        
       | m_dupont wrote:
       | I tried some of the positions in this article while trying to get
       | used to sleeping on the floor in an attempt to fix my back pain.
       | These hurt like hell
        
       | anonu wrote:
       | I will be trying more of these suggested positions.
       | Coincidentally, I had a 5 degree wedge under my mattress to lift
       | my head up slightly to reduce snoring. This resulted in increased
       | lower back pain. Removing it reduced this lower back pain
       | substantially.
       | 
       | In some sense, the vertical use of our vertebrae is a design
       | anti-pattern. We evolved from animals that walked on all fours,
       | and vertebrae are much better suited for this horizontal
       | position. This is why we suffer from slipped discs and other
       | ailments that are not common in other animals.
        
       | colloydi wrote:
       | More than a few middle-aged westerners would find it impossible
       | to sleep with bent knees owing to a high prevalance of
       | artherosclerosis (I think).
       | 
       | Also one of the great pleasures of life is turning over in bed
       | repeatedly during a lie-in. Don't know whether it's to do with
       | lymph circulation and/or detoxifying the brain. More
       | investigation needed!
        
       | carpdiem wrote:
       | It would be interesting to know how the comfort or suitability of
       | these postures is affected by physiology.
       | 
       | For example, even the suitability to obtain a deep squat may be
       | affected by things like hip joint geometry:
       | https://www.otpbooks.com/stuart-mcgill-hip-anatomy/
        
       | karaterobot wrote:
       | I notice that all of the sleep positions are either on the
       | stomach or side. I usually go between side and stomach when
       | sleeping, and can't really fall asleep very well on my back. But,
       | my impression is that most people go between side and back, with
       | stomach sleepers being a minority (I've even heard it called
       | weird).
       | 
       | This study backs that up (54% side, 37% back, 7% stomach)
       | 
       | https://www.dovepress.com/sleep-positions-and-nocturnal-body...
       | 
       | I wonder if the difference is cultural, or technological: that
       | is, do we learn to sleep a certain way, or is it that the
       | mattress changes the equation somehow and makes people 5x more
       | likely to sleep on their back than on their stomach?
       | 
       | In the past, I've hypothesized that it's cultural, and my just-so
       | etiology for the phenomenon is that it comes from TV and movies.
       | It's much easier to get a good shot of an actor delivering dialog
       | while lying in bed on their back, compared to their stomach, so
       | we see people sleeping on their back and learn to do it that way.
       | 
       | This is all just uninformed speculation, and of course it assumes
       | the original, linked article is valid at all.
        
         | spondylosaurus wrote:
         | How do you breathe when you sleep on your stomach? My back and
         | hips feel amazing when I try it, but my neck starts to hate me
         | from the way I have to twist around to get air.
        
           | ecshafer wrote:
           | When you sleep on your stomach you turn your head to the
           | side, breathing is easy.
        
           | tejohnso wrote:
           | Try putting a pillow under the shoulder that your mouth is
           | closest to. A slight lifting of the shoulder might relieve
           | the neck strain.
        
           | karaterobot wrote:
           | Looks a lot like figure 4 in that article, but with my arms
           | wrapped around a pillow. The arms hold up the head, and the
           | neck isn't rotated so much that it hurts. There's usually a
           | little twist at the hips, and my legs are kinda jackknifed as
           | in the second figure 2 picture (I just noticed the caption
           | points out how "the penis is protected from insects", ha ha).
           | Very comfortable, though my ribs will get a little sore after
           | a while, so I rotate with a side sleeping position throughout
           | the night.
        
       | WaitWaitWha wrote:
       | I am very uncomfortable with this paper to be called scientific
       | research. It certainly appears the author had extensive life
       | experiences, but does not demonstrate any of the data he
       | collected.
       | 
       | > If you are a medical professional and have been trained in a
       | "civilised" country you probably know next to nothing about the
       | primate Homo sapiens and how they survive in the wild.
       | 
       | Starting off by insulting an entire population and making
       | assumptions about what they do or do not know is odd. The
       | disrespect continues on how an entire medical field "do not know
       | that nature has provided". The author continues on to further
       | disrespect by moving medical professionals in to "so called
       | civilised people", and makes medical conclusions of "suffer[ing]
       | unnecessarily from musculoskeletal problems".
       | 
       | And, this is just in the first paragraph. The second paragraph
       | goes into the author's background how he lived amongst tribal
       | people, commanded a platoon of African soldiers, and organized
       | expeditions to meet native peoples and study their sleeping and
       | resting postures.
       | 
       | > I tried to carry out surveys to collect evidence but they were
       | meaningless
       | 
       | The author collected evidence, and the evidence was meaningless
       | (alternative hypothesis false?) so... he discarded it? Would it
       | not make sense to attach it and explain why it was meaningless?
       | 
       | One of the conclusions is
       | 
       | > Forest dwellers and nomads suffer fewer musculoskeletal lesions
       | 
       | but then...
       | 
       | > Arabs in the Sahara will sit in the position shown
       | 
       | How is the Arabs in the Sahara backing up forest dwellers
       | conclusion?
       | 
       | NIH publishing this is odd. At least it was not written by
       | ChatGPT.
        
         | sdwr wrote:
         | How is this not science?
         | 
         | He has a hypothesis - modern sleep devices are not as good for
         | the spine as the bare ground.
         | 
         | He suggested a reason why - pressing against the ground during
         | sleep acts as therapy.
         | 
         | He has data - life experience, pictures, and demonstrations.
         | 
         | Maybe it doesn't pattern match as science to you, but the raw
         | science is all there. A few hundred years ago, this is how most
         | science was conducted - by individuals with specific bones to
         | pick.
         | 
         | Is it conclusive? No. Is it worth being part of the
         | conversation? Absolutely!
        
         | Herodotus38 wrote:
         | Remember that the NIH does not publish (edit: to be clearer
         | this is the National Library of Medicine which falls under the
         | umbrella of the NIH, and its URL), it just organizes articles
         | like a local library but on a much larger scale. It's a common
         | misconception. This article was published by the British
         | Medical Journal as an interesting anecdote from a physical
         | therapist. The NIH makes things available for searching but
         | does not endorse anything that they have available.
        
       | frame_ranger wrote:
       | Rest and vest brahs, rest and vest.
        
       | eightnoteight wrote:
       | I never focussed much on sleeping postures, but one day I read
       | this article about how acid reflux goes away if you side-sleep on
       | your left hand side i.e stomach is at a lower height than when
       | you sleep on your right hand side
       | 
       | that really changed my life, it was like, how did I waste 28
       | years of my life without finding this trick :D
        
       | 0xbadcafebee wrote:
       | I am a subject of the species Sapiens, genus Homo. Subject is a
       | civilized example of the species. An unfortunate side-effect of
       | being civilized is an encouragement to collect paper, with which
       | subject is to trade for essential goods. The method subject has
       | devised to collect these trade papers involves sitting on a soft
       | yet sturdy apparatus and being bent at an approximately 90-degree
       | angle at the hip and knee joints, and looking at a glowing
       | rectangle while subject taps on a noisy set of squares.
       | 
       | Of the unfortunate side-effects of civilization, one is risk of
       | injury. Of the several injuries subject has sustained in this
       | pursuit (including to eyes, fingers, wrists, and elbows) is
       | injury to subject's neck. In particular, a musculoskeletal injury
       | of the muscles supporting the head on the spine, due to repeated
       | stress from looking at a downard angle at glowing rectangle, as
       | opposed to looking straight ahead.
       | 
       | This injury did result in up to 11 months of recuperation. During
       | this time period, finding a way to rest the neck and head was
       | extremely difficult and painful. After completing several weeks'
       | worth of paper collection, some attempts were made at
       | recuperation outside in nature. Upon attempting to sleep on the
       | ground, rest was significantly painful and uncomfortable. Thus
       | were attempted many months of trial and error at attempting to
       | find positions with which to rest in a comfortable manner, while
       | allowing the neck to heal.
       | 
       | At the end of recuperation, the result of attempts at finding
       | resting positions was quite unexpected. Rest for this subject no
       | longer requires (nor benefits from) pillows when side-sleeping,
       | and back-sleeping is easier, though still not preferable. The
       | explanation for this change appears to be an adaptation in
       | musculoskeletal alignment when sleeping. This subject now
       | acquires a particular alignment of head, neck, spine, shoulder,
       | chest, back, and hips, that keeps any one body part from
       | receiving undue strain. Sleep quality is consistent with sleep
       | quality before injury, with the benefit of no longer needing
       | props to assist in sleep quality.
       | 
       | The linked article's conclusion appears to be supported by
       | subject's experience. Subject additionally notes that a single
       | ear is enough to be alerted to most dangers. When sleeping
       | outside, or in an enclosed cabin, such things as mice, deer, and
       | the occasional canid, do tend to wake the subject, as well as odd
       | sounds such as socks falling off the bed onto a plastic bag, or
       | elastic bed sheet end-corners snapping upwards. Whether
       | non-h.sapiens species are also alerted to the latter sounds with
       | one ear open has not been formally evaluated.
        
       | keybored wrote:
       | This is so fascinating.
       | 
       | I slept (on my back) on the floor for a while. It was at times
       | amazing--I would wake up and feel ready to go. Not like my
       | muscles were weak or temporarily atrophied. Like, I didn't know
       | that was possible after a full nights sleep.
       | 
       | There seems to be so much potential in just reflecting on an
       | considering what a "paleo" approach to something would be. And
       | then you can just do that. You don't even need to buy hundreds of
       | dollars worth of supposedly ergonomic equipment. Just sleep in a
       | funny-looking position. Just squat instead of sitting on a
       | chair... if you can bare the social awkwardness or ridicule.
       | 
       | It's so simple. Why do we make things complicated?
       | 
       | Well in part because "modern humans" cannot just _do_ these
       | things without becoming regarded as merely a modern human with
       | eccentric hobbies. Because that's what you get pegged as!--not as
       | a modern human who rediscovered (through YouTube /the Web) some
       | ancient wisdom but as a paleo-hipster, just another quirky modern
       | human subculture.
       | 
       | And in part that is correct. You cannot be, say, a Western
       | Buddhist who has all the know-how and experience of a born-in-
       | the-culture (Asian) Buddhist. And in that same way you cannot
       | become a non-modern... human.
       | 
       | But wait. Why would you want to? You are who you are. You may be
       | a Buddhist from Scranton, PA who has no relation to Asian
       | culture. Or an office worker who squats at the office. _But why
       | is that weird?_ Yeah you're not a "real Buddhist" in that
       | terribly essentialist sense, and you're not a born-in-the-culture
       | kind of human who has never used a chair. But why do you have to
       | be that in order to make these (eccentric) choices for yourself?
       | If it works for you, just go for it you paleo-hipster.
        
         | pedalpete wrote:
         | I also slept on my floor for about 5 months - until I saw a
         | huge cockroach (common in Sydney) run across my floor and hide
         | under my pillow.
         | 
         | I agree, it felt great.
         | 
         | When I moved into my new, almost cockroach free apartment, I
         | built my own shikibuton by taking a futon cover and stuffing it
         | with a comforter and a thin foam mattress topper. The whole
         | thing is about 7cm (2.7 inches) thick. I roll it up each
         | morning and have been sleeping like this for the last 8 months.
         | 
         | I also use only 1 thin pillow, and for a while was placing it
         | lengthwise along my spine, which is apparently good for fixing
         | the hunchback posture of modern humans.
        
       | friend_and_foe wrote:
       | There are a lot of things that we do that wild animals and wild
       | people don't do, and a lot of things they do that we don't do. If
       | "do what they do" were a panacea we wouldn't be living like this
       | in the first place.
       | 
       | They don't have access to antiparasitic medications, for example.
       | Another example, they don't stare at screens ever. Plenty of our
       | habits are better for us and plenty are worse, and the same is
       | true for them. I'm sure plenty of habits of all people have trade
       | offs. We have a higher life expectancy. What's a better metric
       | for healthy lifestyle than that? It doesn't mean everything is
       | better, but it is a good yardstick for determining if we are
       | doing more right than wrong to our health, all in all.
       | 
       | So just "this is how it's done in nature so we are wrong about
       | how we do it" isn't a good heuristic. A dog will lay on something
       | soft given the opportunity.
        
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