[HN Gopher] Cardiorespiratory fitness is associated with lower a...
___________________________________________________________________
Cardiorespiratory fitness is associated with lower anger and
anxiety
Author : PaulHoule
Score : 87 points
Date : 2026-02-24 17:03 UTC (5 hours ago)
(HTM) web link (linkinghub.elsevier.com)
(TXT) w3m dump (linkinghub.elsevier.com)
| toomuchtodo wrote:
| Related:
|
| _Exercise may relieve depression as effectively as
| antidepressants_ - https://news.ycombinator.com/item?id=46541672
| - January 2026
|
| _Exercise twice as effective as anti-depressants_ -
| https://news.ycombinator.com/item?id=39396047 - February 2024
|
| _Running from the Pain (2018)_ -
| https://news.ycombinator.com/item?id=27306725 - May 2021
|
| _Running from the Pain_ -
| https://news.ycombinator.com/item?id=16573009 - March 2018
| arctic-true wrote:
| I am pretty confident from my own experience that the study's
| conclusion is broadly true. But the study leaves open one obvious
| alternative explanation: people who have enough free time to
| exercise regularly (and exercise was used as a stand-in for
| fitness level, it doesn't look like they actually measured
| anything else) could have less stressful and anger-inducing lives
| overall.
| PeterStuer wrote:
| Alternatively: People who spent their time regularly exercising
| instead of arguing on Facebook or X, have lower anger and
| anxiety.
| PaulHoule wrote:
| Which introduces variables such as: "believes in righteous
| anger"
| rustyhancock wrote:
| And alternatively again, you need to have lower anger and
| anxiety to engage in excercise!
|
| I'm sure all of this is an inseparable mess.
|
| But it doesn't affect the recommendation does it? Everyone
| should aim to be physically fit and that involves engaging in
| cardiorespiratory exercise.
| usefulcat wrote:
| I thought of "people who have enough time to exercise because
| they don't have to work multiple jobs in an attempt to scrape
| together enough to make ends meet".
| oncallthrow wrote:
| Under 10 million people in the US (less than 6% of
| workforce) work multiple jobs.
| kace91 wrote:
| Pretty much everything related to exercise is a direct or
| indirect positive effect for health.
|
| Stress relief, tiredness leading to better sleep, physiological
| effects of muscle gain, physiological effects of weight loss,
| social interaction in shared spaces, exposure to sunlight, push
| to improve diet in pursuit of fitness goals, better self image,
| social effects of becoming more physically attractive...
| marginalia_nu wrote:
| Anecdotally, I started lifting again a few weeks ago. Took a
| few years off due to Covid complications, but was previously
| exercising regularly.
|
| Walked up to the bar stressed about all sorts of things,
| everything is expensive, car is making weird chafing noises
| when I make sharp turns, politics, this and that.
|
| Did 3 sets of 5 deadlifts with a 60kg bar. Barely any weight on
| the bar since I didn't want to annihilate my joints.
| Regardless, as I finished the sets, all that stress was just
| gone, and it stayed away for days. I was calmer, clearer, more
| present.
|
| I don't think I have fewer reasons to be stressed since getting
| the gym membership, but I sure am less stressed.
|
| Deadlifts in particular, but really any full body lifts have
| always been a mental state degauss button for me. Doesn't
| matter how many problems you have before you walk up to that
| bar, you'll barely remember them when you're done.
| eudamoniac wrote:
| Note: deadlifts do not "annihilate" joints. Resistance
| training strengthens and improves joints. Repetitive impact
| behavior like running on concrete does annihilate joints
| though.
| marginalia_nu wrote:
| This is from a context of "4 plates used to be pretty easy,
| then I took several years off lifting". I know no faster
| way to get injured in the gym than to try to grind a new
| 1RM after a lengthy break.
| eudamoniac wrote:
| Okay great, but that has nothing to do with your joints,
| unless you meant vertebral joints, but that is not the
| common parlance. You might injure a muscle belly.
| reducesuffering wrote:
| Note: running on concrete does not "annihilate" joints
| either.
|
| https://www.uhhospitals.org/blog/articles/2023/08/running-
| do...
|
| https://www.health.harvard.edu/healthbeat/will-continuing-
| to...
| cryzinger wrote:
| Not saying "cardiorespiratory fitness" and "heart rate" are
| 1:1, because they're certainly not, but beta blockers are a
| known treatment for certain kinds of anxiety. I can attest that
| taking low-dose propranolol twice a day (without pulling any
| other levers related to lifestyle, stress, etc.) has helped me
| mellow the fuck out, which I sorely needed lol. So I would
| wager that cardio fitness is _itself_ correlated with anxiety
| and anger, although in practice it 's tangled up with many
| other factors.
|
| In addition to baseline heart rate, there's also some
| interesting stuff related to anxiety and heart rate
| variability. My understanding is that certain types of
| breathing exercises improve HRV in the short term, which is
| good for calming down if you're riled up, but people with good
| cardio health have a better baseline HRV in the first place.
| (Also, this has always been unintuitive to me, but _higher_
| variability is better for anxiety, not lower variability.)
| PaulHoule wrote:
| I've been doing my own personal research on HRV and getting
| to the bottom of it.
|
| The literature is bewildering because of course there are
| many ways to measure it. If you measure it over the course of
| the day it is influenced by things like the activities you
| do. Of course your HRV is going to be higher if you alternate
| intense activity that raises your heart rate with rest and
| since activity is so important in it I don't think it is fair
| to look at a whole day trace.
|
| I think the most important phenomenon is
|
| https://en.wikipedia.org/wiki/Mayer_waves
|
| which are associated with the metric RMSSD as described here:
|
| https://en.wikipedia.org/wiki/Heart_rate_variability
|
| This is called "SD1" in my app
|
| https://gen5.info/demo/biofeedback/
|
| You can use that app to increase the amplitude of your Mayer
| wave, what you do is breathe in when you see the wave going
| down and breathe in when you see the wave going up. It is a
| little tricky if your Mayer waves are initially weak and you
| might feel light-headed and think "I can't breathe" but once
| it settles in it is a very strong effect.
|
| I have read a number of patents for HRV biofeedback and they
| all involve much more complex things that you might think
| would work if you hadn't tried it but that I don't believe
| would work having tried it.
|
| Funny I have been taking Nebivolol, another beta blocker, and
| found that it drastically lowers HRV-inferred stress as
| measured by my Garmin watch -- I can't really say how it
| affects my app because I wrote it after I started on the
| drug.
| the_pwner224 wrote:
| For those of us who don't have a Polar strap, can you
| explain at a high level how your app works? Based on what
| the page says, seems like something about using R-R
| interval to estimate where you area on the Meyer wave
| cycle?
|
| I have a different heart rate monitor (Amazfit smartwatch,
| mine has their latest sensor that matches the higher end
| Garmin watches for accuracy, it can be used as a Bluetooth
| device or you can develop software to run on it directly).
| What topics/keywords should I look into if I want to
| develop the equivalent application for my hardware?
| engineer_22 wrote:
| My final year of college I lived 2 miles off campus and would
| daily bicycle to school. In previous years I would commute via
| car as I lived too far to make the trip conveniently. I perceived
| greater emotional well-being during the 1 year period of moderate
| daily exercise. My grades also improved dramatically and I was
| more resilient during periods of sleep deprivation or intense
| study. As an adult with a family it has been more difficult to
| establish a pattern of daily physical activity. Going to the gym
| is very boring for me.
| mertd wrote:
| > Going to the gym is very boring for me.
|
| Try group exercise studios, if you have one available. The
| classes are usually one hour. It makes planning very easy. Same
| time, every week. All you need to do is to show up.
| tylerflick wrote:
| You could try signing up for a race. 5k's are a good intro if
| you're new to running. Plus it's a nearly free hobby.
| Havoc wrote:
| Fitness or the exercise to get there?
| SJMG wrote:
| You get the fitness from the exercise. They didn't subject
| people to exercise, they surveyed them on what they already do
| and found a correlation between exercise and emotional
| resilience.
| small_model wrote:
| Would a stressed out Amazon/Uber eats delivery person who is very
| fit from working 10 hours a day, but with barely enough money to
| feed their family going to be less angry/anxious than a rich
| person lounging at his villa with zero worries? This is looking
| at one variable which isn't very useful.
| 0_____0 wrote:
| working != working out
|
| if you don't believe me, take one look at a construction site
| and the workers on it.
| small_model wrote:
| But the article mentions cardiorespiratory fitness, not
| working out vs working.
| 0_____0 wrote:
| My point is that physical labor won't grant you cardio
| fitness.
| seizethecheese wrote:
| Diet is the main driver of obesity, not exercise. These folks
| are often in great shape under a layer of fat.
|
| More apropos, have you ever met an anxious construction
| worker? I haven't.
| 0_____0 wrote:
| I renovated my house over the course of two years, so I've
| had a lot of close contact with tradespeople. Carpenters,
| demo, electricians, hvac, plasterers... the young guys are
| ok and buckstrong. By the time they're in their 40s, you
| can tell the work is rough on them.
|
| Having muscle is only one dimension of fitness. You're
| entirely neglecting cardiovascular health, which is a
| better predictor of longevity.
| Angostura wrote:
| > This is looking at one variable which isn't very useful.
|
| It's a core part of the scientific process: "All else being
| equal..."
| small_model wrote:
| It's not though unless they cloned the humans and put them in
| a lab for 50 years.
| sp1nningaway wrote:
| I am 100% certain my resilience to stress and anxiety is directly
| tied to my cardiovascular health. I'm prone to a heart-racing,
| hot-eared flywheel of anxiety. When I've been running a lot I can
| FEEL the vagal tone/HRV fitness that gives me an physical off
| ramp for the mental space to take a fucking chill pill.
| jerlam wrote:
| Cardio is unpleasant and stressful, which is why most people
| don't do it. Someone willing to do something that is not fun, on
| a regular basis, is going to have stronger mental status that
| someone who doesn't try at all.
|
| As Calvin's dad says, misery builds character.
| AstroBen wrote:
| It's only unpleasant and stressful when you're unfit. I cycle
| 4-6 hours a week and it's wayyy more pleasant than sitting
| around at home
| reducesuffering wrote:
| Agreed, cardio is actually generally enjoyable, hence the
| massive popularity of run clubs and marathons. It is
| unpleasant for the first couple months of someone 20 years
| sedentary and overweight going into 9/10 effort runs though
| (when they should jog)
| tredre3 wrote:
| > the massive popularity of run clubs and marathons
|
| A few hundreds/thousands members in cities of millions
| doesn't equate massive popularity. Doing cardio is
| unpleasant to most people, I don't understand why it's so
| important to cardio enthusiasts to frame them as being
| liars or unaware? That's not convincing anyone and your
| energy would be better spent trying to find other ways to
| entice people.
| reducesuffering wrote:
| How many yearly events are drawing tens of thousands in
| cities? About 15% of the US runs regularly per stats,
| cardio is even more because cycling is also huge.
|
| Of course cardio is unpleasant to most people, 73% of the
| US is overweight or obese. I'm saying for healthy
| individuals with a small modicum of fitness (like their
| bodies were evolutionarily designed to do, we are the
| animal kingdom's top long distance runner after all),
| cardio is generally enjoyable.
| mhurron wrote:
| People who enjoy exercise are in the minority. Literally
| doing anything I find interesting would be preferable to
| exercise, I exercise because I have to, not because it is
| enjoyable in any way.
| AstroBen wrote:
| I think it depends. People should branch out more and try
| different sports. I'm sure there's something most people
| could find that just happens to be exercise
|
| I was like that when I was into lifting weights. I wanted
| the results, but found the process incredibly grueling
|
| With running/cycling I like the activity, not that
| interested in the results
| jerlam wrote:
| It's the "forcing yourself to do something unpleasant" part
| which improves mental state, not the fitness itself. I
| suspect that people who find exercise enjoyable, or are
| forced to do it, don't get the same benefits.
|
| This article is basically just the marshmallow test: https://
| en.wikipedia.org/wiki/Stanford_marshmallow_experimen...
|
| And 4-6 hours a week would be a low week for me =)
| Aaronstotle wrote:
| I used to feel this way until I discovered cycling, I started
| running because I don't want to bike in NYC winter weather.
| Highly recommending trying cycling since you get to make it as
| hard as you want and it builds amazing cardio
| scottious wrote:
| Once you get over the hump and develop a certain amount of
| cardiovascular fitness, it stops being unpleasant and
| stressful.
|
| The real problem is that most people don't feel like this is
| true. It really takes a solid 6ish months of earnest effort (AT
| LEAST 3x per week, probably more) to develop cardiovascular
| fitness. For some people, it'll take even longer.
|
| I run an average of 6 days per week for the past 10+ years. At
| this point running is just about the easiest thing I do, it
| doesn't take any mental fortitude at all to do it. It wasn't
| always that way though, I used to dread it.
| weatherlite wrote:
| > It really takes a solid 6ish months of earnest effort (AT
| LEAST 3x per week, probably more) to develop cardiovascular
| fitness. For some people, it'll take even longer
|
| I don't think people need to suffer through 6 months just to
| start enjoy running. Yes when beginning running you suck (and
| also prone to injury); you basically have no zone 1-2 since
| your'e so out of shape, your zone 2 is basically a fast walk.
| So for newbies who train like that all runs become a zone 3
| or even 4 - when you're totally new to running. No surprise
| they many time a) hate it b) get injured
|
| I advise newbies to walk and run and try to keep HR very very
| controllable until you build up fitness. That should be both
| more fun and also more sustainable injury wise.
| weatherlite wrote:
| > Cardio is unpleasant and stressful
|
| It can be, especially when you're only getting started and
| completely out of shape (I advise mostly walking and a bit of
| running if thats the case). But it can also be a beautiful,
| relaxing, meditative and totally addictive thing - which is why
| tens or hundreds of millions around the world do it. That
| feeling of unlpeasant stress means you probably went to hard;
| decrease the intensity. Walk if u have to, then run a bit, then
| walk some more. I agree that when you're starting out - feeling
| like you're suffocating / out of air is not a great feeling.
| There's really no reason to train like that.
| eYrKEC2 wrote:
| Zone 2 cardio is pretty doggone easy. I notice that if I hit 50
| minutes of zone 2, then it is a huuuge stress reliever for me.
| efficax wrote:
| when you're fit and make it a habit cardio is pleasant and
| calming. and it doesn't take long to get there unless you have
| health complications
| Herring wrote:
| Exercise is good, everyone knows. The problem is advising people
| to exercise doesn't work and doesn't scale. Gyms are for people
| who have plenty of intrinsic motivation _and_ money _and_ time.
|
| To improve physical activity at the population scale and over a
| lifetime, it literally has to be built into the design of the
| cities, so people get enough exercise while walking to work or
| grabbing groceries.
|
| https://cs.stanford.edu/people/jure/pubs/activity-inequality...
|
| https://www.youtube.com/watch?v=KPUlgSRn6e0&ab_channel=NotJu...
| gedy wrote:
| I think it would also help to not have everyone working so damn
| much.
| amelius wrote:
| Or maybe work harder in the physical sense.
|
| AI will help by doing all the intellectual work.
| m463 wrote:
| talk to your ai while you walk?
| amelius wrote:
| treadmill that only outputs tokens while you walk it
| devmor wrote:
| RTO is also a factor for some... when I was working full
| remote I had the time and energy to attend an HIIT class 4
| days a week. I was in the best shape of my life.
|
| Since starting a position that requires me in the office for
| 3 or more days a week, I no longer have the energy (or
| schedule) to attend since I spend ~120-160m in traffic.
| Between that and the lack of proximity to my own kitchen
| affecting my dietary choices, I've gained almost 40lbs in 2
| years.
|
| All of this is of course avoidable with self-discipline, but
| self-discipline wanes as you get more exhausted from your
| day.
| CincinnatiMan wrote:
| Why do you choose to live this way? Such a long commute
| sounds life-sucking. Consider moving to a smaller city.
| rickydroll wrote:
| where you can get a job dictates what city you live near,
| how much you are paid determines how close you can live
| to that city, and how much distance you want to keep from
| your neighbors sets the density you can stand.
|
| Moving to a smaller city changes your job, which changes
| how much you are paid, which changes how close you can
| live to the city, and your neighbors may still suck. It's
| likely that you'll end up in the same soul-sucking
| commute life that you just left.
| gedy wrote:
| That's what a lot of people did when "WFH"
| Aurornis wrote:
| > since I spend ~120-160m in traffic.
|
| You went from one extreme to the other. 2 to 2.5 hours of
| commute each day is very unusual.
| lenkite wrote:
| I have found stair walking a good, zero-cost, easily accessible
| and fast-to-execute means of exercise in urban areas. You can
| also scale-up/scale-down intensity and duration to your heart's
| content.
| pigpop wrote:
| or you can just buy a kettlebell and do swings for as long as
| you can last
| jjj123 wrote:
| That requires intrinsic motivation, which is part of OPs
| point. If you build a walkable/bikeable city, you raise the
| exercise floor for everyone.
| weatherlite wrote:
| > If you build a walkable/bikeable city, you raise the
| exercise floor for everyone.
|
| That requires intrinsic motivation for people to want to
| leave their house. I'm not kidding, if jobs are going to go
| away we're all gonna become super fat. Thank god for
| Ozempic I guess.
| Aaronstotle wrote:
| Yeah, during covid and little bit after I was in amazing shape
| because I was able to go on nice long bike rides a few times a
| week. It got me thinking what would our society feel like if
| everyone was able to exercise?
| noelwelsh wrote:
| Hear hear! Exercise at scale is an urban design problem.
| mojuba wrote:
| You don't even need to reinvent a walkable city, just look at
| any medieval historical town that is say ~500 years old,
| almost untouched, and has restricted traffic today (possibly
| with no public transport whatsoever). These towns are a pure
| joy to live in, they are walkable with no other options,
| quiet, pleasant and overall healthy to live in in all
| respects.
| Fricken wrote:
| We keep rediscovering that we're happier and more fulfilled
| when we live in ways that are more like how we've been
| living for most of the last million years. Also we are
| disgusted by our ancestors and look down upon them.
| alentred wrote:
| We lack basic education in fitness, really, we do! They don't
| teach it in schools, but really just walking your 8-10k steps a
| day + simple own-weight exercises at home do wonders! Gym is
| fine for those who like it and can afford it (time, money), but
| by far not the only solution. We need to educate ourselves
| better. Plus, better cities, I am with you on that one.
| nathan_compton wrote:
| I find this confusing, but most people do not like to
| exercise. I think most people know how.
| Aurornis wrote:
| For those people it's better to call it "being active" or
| "moving" or just "not sitting all day".
|
| There's way too much emphasis on gyms, workout programs,
| PRs, and difficult fitness. Most people just need to move a
| little more.
| galleywest200 wrote:
| There are a ton of ways to exercise that are fun, people
| just fail to see that. Hiking (free), rucking (only
| requires a backpack), climbing/bouldering (free outside,
| money in a gym), sports (free minus ball cost), kayaking,
| canoeing, walking your dog, etc.
| ako wrote:
| Education is not the problem. People know sugar is bad,
| people know cigarettes are bad, people know alcohol is bad,
| still millions use these substances every day.
|
| What works best is to find some form of exercise that you
| really enjoy. I will get up at 5 in the morning, skip diner,
| skip appointments when i get a change to exercise, just
| because i enjoy it so much.
|
| In addition, what also helps is to ensure normal activities
| require excercise. I will walk to the shop every day for
| groceries, walk the dog every day, cycle into town, best if
| you can cycle to work.
| Aurornis wrote:
| I'm all for walkable/bikeable cities, but that doesn't solve
| the intrinsic motivation problem either.
|
| I live in an area that has a lot of walkable and bikeable
| things nearby. There are a lot of people who drive anyway. Some
| because they're older, others because they have kids, others
| because they have busy schedules, and some are just lazy.
|
| So while I'm in favor of better city layout, I don't think this
| would be a magic solution.
|
| > Gyms are for people who have plenty of intrinsic motivation
| and money and time.
|
| There are a lot of ways to work out without a gym. You can go
| for a walk or run around your neighborhood or even do a lot of
| workout programs at home. There are many easy workout systems
| that don't even take a lot of time and are easy to get started
| if you're not in shape.
| BrenBarn wrote:
| > I live in an area that has a lot of walkable and bikeable
| things nearby. There are a lot of people who drive anyway.
|
| The less warm and fuzzy part of this urban-design approach is
| that it can't just be about making things easier to walk to,
| it also has to be about making them _harder_ to drive to. For
| instance, by making parking limited and /or expensive. People
| tend not to like that idea, although I think there's a good
| likelihood they'd actually be happy with it if not for the
| meta-awareness of having "lost" parking.
| Aurornis wrote:
| People don't like that idea because it's highly
| exclusionary.
|
| It only sounds good to younger people who don't have any
| disabilities, kids, grandparents who want to come along, or
| any number of other valid reasons to walk.
|
| It's also highly indicative of the weather where you're
| from. Forcing people to bike and walk everywhere sounds a
| lot better if you're in a moderate climate where bad
| weather means you need to pack a light jacket and wait for
| the light rain to stop. Move somewhere with harsh winters
| and the moralizing about people driving places stops making
| sense quickly.
| fusslo wrote:
| When I was in SF, the coworkers who drove in were those
| who lived outside of the city who were trying to save
| money and raise family. Buying a home in the city is
| impossible for these people (and me). Mostly less
| prestigious jobs, like cleaners, technicians, office
| managers. Not the App guys making 300k living in the
| Marina.
|
| It's often an unintended tax on the poor.
|
| IDK maybe there's some middle ground where we beef up
| public transport while beefing up parking at stations.
| Herring wrote:
| This might sound reasonable, but it's a solved problem in
| Europe. They have plenty of old/disabled people and harsh
| winters there too. Many parts are de-emphasizing cars.
| mattlondon wrote:
| I wonder if there is some underlying lizard-brain thing going on
| here.
|
| If you "know" you are physically unfit you are quick to anger and
| aggression _because_ you potentially need to act like that to not
| _need_ to rely on physical fitness if it came to needing it? I.e.
| you need to deter others through your aggression rather than
| relying on fitness if it came to a fight?
|
| Or alternatively the other perspective if you "know" you are fit
| you can keep the stress hormones low safe in the knowledge that
| if it comes to it you've got the fitness to handle a fight?
|
| ...Or perhaps none of that!
|
| Interesting.
| csours wrote:
| Or even more lizard brain: if you have more cardio
| capacity/fitness, your body actually FEELS better, so you feel
| better emotionally and cognitively.
|
| If you have lower capacity, your body feels bad and this is
| reflected in your emotional and cognitive state.
| vjk800 wrote:
| I've had the same idea. Especially regarding anxiety. You start
| getting anxious and scared of everything, because your brain
| knows that your body is out of shape and incapable of dealing
| with stuff if anything happens. If you can't deal with any
| problems, then you must constantly be on lookout for them so
| that you can avoid them.
| jihadjihad wrote:
| "Exercise gives you endorphins. Endorphins make you happy. Happy
| people just don't shoot their husbands. They just don't."
| agjmills wrote:
| Linguistics question: the title says "[...] is associated with
| lower anger and anxiety" I read it as _people who have lower
| anger, and people who have anxiety_ Am I broken? (I am a native
| English speaker but that doesn't mean that I speak English
| correctly)
| devmor wrote:
| The title is grammatically standard to the title of other
| scientific studies of this nature and communicates the intent
| succinctly to those who know they are looking at a psychology
| study.
|
| A descriptive rewording for general understanding could be
| something like "We measured an association with lower anger and
| anxiety and higher emotional resilience in individuals with
| higher cardiorespiratory fitness rates."
| seydor wrote:
| sample size and methods do not inspire confidence about such
| broad generalizations
| disgruntledphd2 wrote:
| This study seems both wildly underpowered, chooses relatively bad
| methods for analysis (splitting between below average and above
| average, really?) and has far too many comparisions (they claim
| to have used bonferroni corrections where necessary, and then
| don't mention it again).
|
| All in all, it's a pretty good example of modern psychological
| research. Bad statistics, hyped up findings and (probably) wild
| over-generalisation about what this tiny study means for
| society/the world/my research funding.
|
| I think the biggest flaw here is around the measurement of VO2
| max. So they first ask people how often they exercise (cos no-one
| ever lies) and then use a linear equation to map that to VO2 max.
| Granted, the equation has lines for age and sex, so it's not
| entirely useless, but if you're only going to sample 40 students
| then why not try to measure things a _little_ better?
|
| The most unintentionally hilarious thing about their methods
| section is that age was not normally distributed (according to a
| shapiro test). They sampled students, so of course it's not going
| to be normally distributed. Students have a well-known bias in
| age.
|
| Ultimately, regardless of whether or not this finding turns out
| to be true (I like the idea of it, myself) this study provides
| absolutely no evidence for the effect.
|
| Note: I have a PhD in psychology, but left the field a decade
| plus ago. I'm both horrified by this study, and also having a lot
| of fun poking holes in it, maybe I should try to get back into
| reviewing? ;)
| m463 wrote:
| read1 the book "Spark" and a school instituted a daily exercise
| program. Kids were happier, fought less and got better grades.
|
| https://www.amazon.com/dp/0316113514
|
| [1] well, listened to the audiobook while walking
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