[HN Gopher] Which type of exercise is best for the brain? (2016)
       ___________________________________________________________________
        
       Which type of exercise is best for the brain? (2016)
        
       Author : Ecto5
       Score  : 81 points
       Date   : 2021-04-08 17:56 UTC (5 hours ago)
        
 (HTM) web link (well.blogs.nytimes.com)
 (TXT) w3m dump (well.blogs.nytimes.com)
        
       | mcorning wrote:
       | My father has run every day for almost 10 years, a combo pack of
       | speed and distance, but at least a 5k every day. One thing we
       | talked about regarding thinking and running really stuck with me.
       | 
       | He sometimes listens to music and audiobooks so that he wouldn't
       | get bored during his runs. Then one day, when his headphones were
       | dead, he went without any music. He found himself having a
       | conversation in his head, addressing questions that he hadn't
       | asked himself in years. Now, it's some truly coveted alone and
       | reflection time. He very often comes back from his runs energized
       | with new ideas or an organized plan of what he needs to tackle
       | next in his job (he's in academia).
       | 
       | I have also found the quiet of running to be invaluable at on
       | some days and will often choose the conversation of myself as
       | opposed to tuning in and out of an audiobook.
        
         | jacksonkmarley wrote:
         | Yeah I enjoy audiobooks while walking but if I'm on a walk at
         | lunch and I'm engaged with some interesting thing at work it
         | can be quite interesting to let my mind play with the problem
         | while I'm on walking autopilot
        
       | bozzcl wrote:
       | *in rats
        
       | dang wrote:
       | Discussed at the time:
       | 
       |  _Which Type of Exercise Is Best for the Brain?_ -
       | https://news.ycombinator.com/item?id=11117929 - Feb 2016 (118
       | comments)
       | 
       | Past large related threads -- quality not guaranteed:
       | 
       |  _Dance is superior to repetitive physical exercise for brain
       | plasticity (2018)_ -
       | https://news.ycombinator.com/item?id=23946732 - July 2020 (214
       | comments)
       | 
       |  _Evolutionary history and why physical activity is important for
       | brain health_ - https://news.ycombinator.com/item?id=21865579 -
       | Dec 2019 (123 comments)
       | 
       |  _Ultra-Time-Efficient Exercise Lowers Blood Pressure, Boosts
       | Brain Function_ - https://news.ycombinator.com/item?id=19626995 -
       | April 2019 (43 comments)
       | 
       |  _This is Your Brain on Exercise (2017)_ -
       | https://news.ycombinator.com/item?id=19474967 - March 2019 (38
       | comments)
       | 
       |  _How Exercise Might "Clean" the Alzheimer 's Brain_ -
       | https://news.ycombinator.com/item?id=18228627 - Oct 2018 (209
       | comments)
       | 
       |  _Exercise Increases Brain Size_ -
       | https://news.ycombinator.com/item?id=15691885 - Nov 2017 (11
       | comments)
       | 
       |  _Training exercise boosts brain power, Johns Hopkins researchers
       | say_ - https://news.ycombinator.com/item?id=15508714 - Oct 2017
       | (138 comments)
       | 
       |  _Exercise as a Preventive or Disease-Modifying Treatment for
       | Dementia Brain Aging_ -
       | https://news.ycombinator.com/item?id=14717547 - July 2017 (72
       | comments)
       | 
       |  _Exercise Releases Brain-Healthy Protein_ -
       | https://news.ycombinator.com/item?id=11995637 - June 2016 (180
       | comments)
       | 
       |  _Which Type of Exercise Is Best for the Brain?_ -
       | https://news.ycombinator.com/item?id=11117929 - Feb 2016 (118
       | comments)
       | 
       |  _Exercise during pregnancy gives newborn brain development a
       | head start_ - https://news.ycombinator.com/item?id=7653274 -
       | April 2014 (17 comments)
       | 
       |  _How exercise boosts brain health_ -
       | https://news.ycombinator.com/item?id=6548908 - Oct 2013 (42
       | comments)
       | 
       |  _What happens to our brains when we exercise and how it makes us
       | happier_ - https://news.ycombinator.com/item?id=4580977 - Sept
       | 2012 (80 comments)
       | 
       |  _How exercise could lead to a better brain_ -
       | https://news.ycombinator.com/item?id=3881206 - April 2012 (27
       | comments)
       | 
       |  _How Exercise Fuels the Brain_ -
       | https://news.ycombinator.com/item?id=3620529 - Feb 2012 (18
       | comments)
       | 
       |  _Forced Exercise 's Effects on the Brain_ -
       | https://news.ycombinator.com/item?id=3106799 - Oct 2011 (57
       | comments)
       | 
       |  _How Exercise Can Strengthen the Brain_ -
       | https://news.ycombinator.com/item?id=3047554 - Sept 2011 (60
       | comments)
       | 
       |  _Brain shifts from glucose to lactate fuel source during
       | exercise._ - https://news.ycombinator.com/item?id=320714 - Oct
       | 2008 (8 comments)
        
       | p1mrx wrote:
       | If you want to overclock a CPU, you need a decent power supply.
       | If you want to overclock a brain, you need a decent heart and
       | lungs. The point of cardio is to improve your body's power
       | delivery, so it's one of the more accessible human upgrades.
       | 
       | For me, the biggest blocker was that I perceived sweating as a
       | bad thing to avoid, until I realized that I could buy clothes to
       | sweat in, and shower at arbitrary times, not just in the morning.
        
       | huachimingo wrote:
       | "Solvitur ambulando" - it is solved by walking[1].
       | 
       | https://en.wikipedia.org/wiki/Solvitur_ambulando
        
         | dzonga wrote:
         | we've evolved to have two legs and walk efficiently. walking is
         | greatly underestimated these days due to mechanical inventions.
         | walk walk at least 5 miles daily. now I walk before starting
         | work - feel a burst of energy, mind is cleared up. I try walk
         | slowly.
        
         | enriquto wrote:
         | Definitely. In my case, biking has a similar effect. It seems
         | that I get most of my work settled during my morning bike
         | commute.
        
         | 1-6 wrote:
         | "Solvitur lavando" Shower thoughts...
        
       | challengly wrote:
       | First step: Exercise at all.
       | 
       | Second step: Optimize, but be careful that it doesn't end up
       | compromising step 1.
        
       | tgb wrote:
       | What's the status of adult neurogenesis in humans? Wikipedia says
       | that it's controversial whether or not it exists [1]. If we don't
       | know that happens in humans, what can we make of an a study about
       | exercise-mediated neurogenesis in rats?
       | 
       | [1] https://en.wikipedia.org/wiki/Adult_neurogenesis
        
       | PragmaticPulp wrote:
       | Rodent studies aren't really great for measuring this because
       | it's nearly impossible to control for the rodents' enjoyment of
       | each exercise.
       | 
       | We know that rodents enjoy running wheels because they use them
       | voluntarily. It's not surprising that the exercise they enjoy is
       | the one that seems to produce the most benefits.
       | 
       | For humans: Doing any exercise is better than doing no exercise.
       | Doing frequent exercise is better than doing infrequent exercise.
       | 
       | The most important thing is to pick an exercise that you enjoy,
       | so you'll be more likely to get out and do it and less likely to
       | come up with excuses to skip a day.
       | 
       | Even better: Find an exercise that includes some social activity,
       | even if it's just getting outside and seeing other people in
       | passing as you run past or being in a gym near other people.
       | Social exposure is great for mental health, so combining it with
       | exercise is a good one-two punch.
       | 
       | We do have some human studies on BDNF (measured via serum,
       | because we can't get into human brains obviously) and exercise:
       | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3772595/ They didn't
       | study different types of exercise, but they did find that longer
       | duration exercise produced greater elevations of BDNF. You don't
       | have to run marathons to capture some of this benefit. A long
       | walk is good enough to get started.
        
         | conistonwater wrote:
         | > _even if it 's just getting outside and seeing other people
         | in passing as you run past_
         | 
         | There is nothing social about that at all, that's just not what
         | the word means.
        
           | PragmaticPulp wrote:
           | Social exposure is a broad definition that doesn't
           | necessarily require talking to someone.
           | 
           | Obviously having a conversation with someone is more of a
           | social interaction than sitting quietly in a room with your
           | peers or walking past another person, but any amount of being
           | around people is still more social exposure than being
           | isolated alone in a room.
           | 
           | It's the same reason that coding alone in a private office is
           | different than coding quietly in an open office: Being around
           | people is social exposure.
        
           | throwawayboise wrote:
           | Maybe "social" isn't the right word, but it's a break from
           | isolation. I find that going to the gym just to get out of
           | the house and be in the presence of other people seems to
           | make me feel better. I don't really talk to anyone there,
           | unless it happens to be someone I already know.
        
           | mym1990 wrote:
           | This feels a little harsh. It is known that when humans see
           | other humans doing similar things a bond(empathy) can be
           | created without ever even talking to that person.
           | 
           | When I drive my Jeep and do that little Jeep wave to other
           | Jeeps, that gives me a sense of community with those
           | people(no matter how dumb or weird people driving other cars
           | think it is).
           | 
           | When you run and someone runs past you and you do the little
           | head nod, that is absolutely social, you absolutely relate to
           | that person and create a small social bond.
        
             | Jtsummers wrote:
             | It's also fun running into those other runners later. I
             | used to run on a 5k trail near my office (for about 5
             | years), and would see a lot of colleagues later and
             | recognize them from an afternoon or lunchtime run. It
             | created another point of relation for us besides just
             | sharing an office and a mutual boss four levels above us.
        
         | llarsson wrote:
         | Yes, whether results for rodents on a seven week exercise
         | program actually transfer to humans remains to be seen.
         | 
         | But I would like to point out that besides subjective
         | preference and enjoyment, it is quite clear to me that humans
         | are pretty crap compared to everything physical, except for
         | long-distance running.
         | 
         | We are not the fastest. Not the strongest. Not the best
         | swimmers or climbers.
         | 
         | But as an animal, and on a population level, we are really good
         | at jogging.
         | 
         | So besides being useful for endurance hunting, perhaps it is
         | also the kind of upkeep we need to stay healthy physically as
         | well as mentally?
        
           | tejtm wrote:
           | It is the lack of fur allowing sweat cooling that prevents
           | heat stroke that made us the apex predators; we jogged all
           | mega fauna we met to extinction.
        
             | cma wrote:
             | Other animals sweat though, like horses, hippos (no fur).
        
           | rootusrootus wrote:
           | We know that fundamentally it's our endurance that gives us a
           | physical edge, but I am curious...
           | 
           | > We are not the fastest. Not the strongest. Not the best
           | swimmers or climbers.
           | 
           | Are humans the best _in aggregate_ at all of these? Sure,
           | there is always going to be an animal that is faster in one
           | aspect, but are there other animals that are better than
           | humans at all of them?
        
             | nend wrote:
             | I mean if the criteria is just those four: strength, top
             | speed, climbing ability, swimming ability - there's
             | probably a lot of animals that are subjectively better than
             | us.
             | 
             | It would depend on how you measure/aggregate it but off the
             | top of my head you could make an argument for: most large
             | cats, chimpanzee, orangutan, bears, some pigs, etc.
        
               | rootusrootus wrote:
               | It may be that endurance is all we got. But I was
               | thinking that a chimp is very strong and can climb, but
               | is he any good at running and swimming? A cat is a heck
               | of a runner, but isn't really a great climber aside from
               | specific situations. Humans are fairly adaptable.
               | 
               | But probably it just comes down to our endurance/ability
               | to control body temperature, and big brains to devise
               | creative ways of defeating other animals.
        
             | mym1990 wrote:
             | A physically peak and coordinated human possibly, but it
             | probably comes down to what traits you're actually
             | comparing. Man's advantage is our ability to make tools and
             | be creative. Without proper training and mental prep the
             | average human isn't that fast, can't climb well, won't swim
             | more than 500 feet. If you put the average human today in
             | the middle of the Amazon with nothing, I don't really know
             | if that works out great for most people.
        
         | Swizec wrote:
         | Running and walking seems to be particularly good for thinking.
         | Could be a link to our evolution, or the fact that it's a
         | simple exercise you don't have to focus on and are free to
         | think.
         | 
         | Sports are great for getting in the zone but usually too
         | mentally taxing for background thinking. Boxing, for example,
         | is amazing relaxation but you really can't think about anything
         | else during a round.
         | 
         | Sometimes high intensity stop all other thoughts is exactly
         | what the brain needs. Other times prolonged low intensity gives
         | just the space you need to hear yourself think.
        
           | hi41 wrote:
           | Someone said that doing highly repetitive exercises like
           | running can cause increase in the stress hormone cortisol and
           | hence we must do that in limit. Is that true?
        
             | mikestew wrote:
             | No offense, but we're supposed to counter argue against an
             | anonymous "someone" for which you don't even provide a
             | source? Post a link, we can go from there.
             | 
             | That said, I've been a competitive distance runner for over
             | 40 years. What adverse effects should I be seeing? 'cuz I
             | can't think of any.
        
               | hi41 wrote:
               | It was my close family who told that. I told him that I
               | got an Peloton bike for exercise. At that point he told
               | me what I wrote above. It was part of a conversation and
               | not a webpage that can be linked. Sorry about that.
        
               | hluska wrote:
               | Hey friend, you have no reason to apologize. That idea
               | comes from a former endurance athlete turned fitness
               | blogger named Mark Sisson. It's quite a famous article
               | amongst competitive long distance athletes, mostly
               | because it ignores how we actually train.
               | 
               | Mark Sisson's entire idea is based off of the idea that
               | long distance athletes train at what's called tempo pace.
               | Tempo pace is about 80-85% of maximum heart rate.
               | 
               | He went on to argue that consistently training at long
               | distances increases cortisol levels and said this is bad.
               | 
               | There are two problems with this. First, distance runners
               | don't do all of their training at tempo pace because
               | that's stupid. Second, cortisol isn't all bad - the body
               | needs to be over stressed at points in order to create
               | the adaptations that we are exercising for.
               | 
               | Point being, you've got to be careful just like you are
               | with any form of exercise. If you destroy your body day
               | after day for long enough, bad things will eventually
               | happen to you.
               | 
               | The important thing to always remember is that more
               | runners die from drinking too much water than die from
               | not drinking enough. Everything can and will kill if
               | taken to the very extreme.
        
               | hi41 wrote:
               | Wow, I didn't know there was so much backstory to this
               | one. Thanks!
        
               | hluska wrote:
               | No problem at all. You asked a really good question and
               | deserved a suitable answer. Take care and if you get into
               | running, I hope we get to grind hills together someday!!!
               | 
               | Good luck!!!
        
               | hluska wrote:
               | This idea comes from Mark Sisson and frankly, if you've
               | been a competitive runner for that long, you should
               | likely know that and be prepared to argue it. I've been a
               | competitive runner for a fraction of that time and have
               | had this conversation so many times it's muscle memory.
               | 
               | The article this idea comes from is based on the idea
               | that long distance runners spending their whole runs at
               | 80 - 85% of their max heart rate. That's only about 20
               | seconds off my 5k race pace if I want to compete at that
               | distance. There's no way that I'd keep that pace at
               | distance - my coach would fire me, I'd be an idiot and
               | I'd overtrain myself into oblivion.
        
               | mikestew wrote:
               | So it's based on a crap premise? No wonder I've not heard
               | of it, and for that I make no apologies.
        
               | hluska wrote:
               | No but you could have been kind and helped someone learn.
               | Instead you chose to respond with ego...just like you did
               | now!
        
             | throwaway1777 wrote:
             | It's not true. Also cortisol is not actually bad for you in
             | the context of exercise.
        
             | PragmaticPulp wrote:
             | Basically, ignore any subject matter that tries to reduce
             | cortisol to being "bad".
             | 
             | Cortisol isn't inherently good or bad. It's context-
             | specific. It's not something you want to universally lower.
             | In fact, if you take supplements or medicine that
             | significantly lowers cortisol (e.g. by inhibiting cortisol
             | synthesis) you'll find that you don't feel very good at
             | all. You need an appropriate amount of cortisol to respond
             | to activities.
             | 
             | Running extreme amounts (100s of miles per week over and
             | over again) should be approached with additional education
             | and appropriate attention to one's health, but generally
             | speaking someone running for fun and paying attention to
             | their body (e.g. don't force yourself to run if your body
             | is telling you to take a break) doesn't need to worry about
             | anything.
        
           | vsareto wrote:
           | >Sometimes high intensity stop all other thoughts is exactly
           | what the brain needs.
           | 
           | HIIT has been great for the rest of the day as long as I
           | don't overdo it, but yeah, completely focused on the workout
           | during that.
        
             | Swizec wrote:
             | I find HIIT doesn't do it for me. Can't push myself hard
             | enough in such short bursts because I have ridiculous
             | cardio conditioning* from running. Boxing is great because
             | it's hiit but with technique and tactics and strategy.
             | 
             | * ridiculous conditioning in that I can keep average heart
             | rate at 155bpm for 2 hours no problem. Most hiit isn't long
             | enough to get me above 110
        
               | hnrodey wrote:
               | I have a lengthy background in hiit (specifically
               | CrossFit). And I say this in the most polite way
               | possible.
               | 
               | You're doing HIIT wrong if you cannot elevate your heart
               | rate beyond 110 bpm. Whatever you're doing, there's a
               | huge gap in the training programming/protocol.
               | 
               | Everyone suffers in CrossFit. Everyone.
        
               | f311a wrote:
               | Can confirm. It's pretty easy to elevate heart rate while
               | doing HIIT. Even if you do it for 10 years.
        
               | Swizec wrote:
               | I agree. My problem is that I am unable to push myself
               | hard enough for such short periods. My explosivity isn't
               | good enough.
               | 
               | And I have fast recovery which makes typical rest periods
               | too long compared to how hard I'm able to push myself
               | during the thing.
               | 
               | Probably would work better if I got a personal trainer to
               | push me specifically rather than in a group/video setting
               | 
               | HIIT with heavy weights works very well for me, but I
               | don't have those available at home. When gyms are open I
               | prefer boxing anyway :)
        
               | hluska wrote:
               | Have you ever tried taking off your shoes at the end of a
               | run, doing some 100m gliders and then hard 40m sprints??
               | I ran barefoot all last outdoor season so your mileage
               | may vary but I can always get into high intensity zones
               | when I do that.
               | 
               | Or, if that doesn't do the trick for you, mixing burpees
               | and light jogging is a lot of fun.
        
               | conistonwater wrote:
               | HIIT means all-out sprints with short rests in between,
               | but that's (unfortunately) not how it's presented in
               | social media sometimes. No matter your shape, running
               | all-out sprints in that particular way will get you to
               | the max heart rate. It's just there are too many people
               | misusing the word now.
        
               | mips_avatar wrote:
               | You won't get to max HR from a 40 meter dash.
        
               | conistonwater wrote:
               | No, of course not, but that's not the correct protocol
               | for HIIT. The first few intervals definitely don't get
               | you to max heart rate, that's why the rest periods are
               | kept short.
        
               | vsareto wrote:
               | I thought they present it as ratios as well, so 1:1 is 1
               | minute on, 1 minute off, or 2m on, 2m off. They give
               | different ratios depending on your level of conditioning,
               | so like 2:1 for fit folks or 1:2 if you're not as fit.
               | I've heard max effort most of the time, but some others
               | have just recommended doing what feels comfortable for
               | newer folks.
        
               | conistonwater wrote:
               | I got it from searching on google scholar, there were
               | lots of papers on it because it's both a buzzword and a
               | seemingly effective training technique for even high-
               | level athletes. The basic issue with the whole concept is
               | that it's _supposed_ to produce similar improvements to
               | long steady sessions of cardio, but only very hard
               | efforts with short intervals produce such improvements.
               | So beginners can 't really do hard efforts very well, and
               | if they also use long rest periods, and especially if
               | they don't go all-out, then the benefits aren't there for
               | them at all and it just becomes false advertising. I
               | think it's a little sad how a valuable bit of sports
               | science got mangled. If you do all this stuff to save
               | time and you don't even get the benefits, then doing low-
               | intensity cardio is just so much better. I run a lot
               | these days but I can't imagine an all-out anaerobic
               | sprint that's 2m long, it seems both difficult and
               | biologically impossible, I think that's just regular
               | interval training (not _high-intensity_ ).
        
               | tomjakubowski wrote:
               | What do you normally do to get to a 155 bpm heart rate?
               | Not an expert but when I've done HIIT workouts, they've
               | always started with a mild warm up to elevate the heart
               | rate. Maybe you'd benefit from something more strenuous
               | to start.
        
               | swader999 wrote:
               | Sprint up hill or grab onto straps and try repeated jumps
               | into the air from a deep squat. Try adding a weighted
               | vest if this isn't enough. If that doesn't work you
               | should join the Navy Seals.
        
               | redis_mlc wrote:
               | Somebodu approaching a 4 minute mile runs at almost
               | double the speed of normal people and is twice as
               | efficient.
               | 
               | That might be what the person mentioned, and I hope he
               | enjoys it while it lasts.
        
               | tomjakubowski wrote:
               | Thanks, however I have no issue getting my outta shape
               | heart to 155 bpm! Was wondering if OP needed a stronger
               | warmup to get their heart rate in the "target zone" for
               | the HIIT work.
        
               | Swizec wrote:
               | 2 hours of running at 4:45/km keeps your heart rate nice
               | and high.
               | 
               | When I ran a marathon in 3:24:xx my average heart rate
               | was 170bpm.
        
               | johnohara wrote:
               | Continuous fartlek style running will get you to 155+
               | bpm. Back off the pace to actively recover to 120 bpm,
               | then go after it again.
               | 
               | Problem is, you need to be fit to do this right, reducing
               | the risk of injury. Always preferred fartlek to repeat
               | intervals on the track. Both have their place however.
        
               | tomjakubowski wrote:
               | Oh yes, I remember giggling at Fartlek in high school.
        
               | johnohara wrote:
               | Few terms are more perfectly suited to the high school
               | mind.
        
               | hluska wrote:
               | If anyone is new to fartleks, it's a Swedish word that
               | means 'speed play'. They're an excellent tool for
               | training.
               | 
               | Maybe be careful the first few times you type that on a
               | phone - my poor running coach got a lot of text messages
               | about 'fart leaks' when I was trying to report on my
               | training. They are not the same.
               | 
               | Edit - If you'd like to try one, Mona fartleks are pretty
               | well known.
               | 
               | https://www.runnerstribe.com/features/the-mona-fartlek-a-
               | cla...
        
           | mantas wrote:
           | As a cyclist, I noticed an interesting difference between
           | road cycling and mountain biking. Road cycling is zen
           | meditation. Great for coming up with solutions. Meanwhile MTB
           | is entirely different. No chance to think. But great to
           | remove built up stress.
           | 
           | In my experience, both is necessary in different life
           | situations. And sometimes both. First reduce stress, then
           | evaluate the source and remove it. Otherwise it's permanent
           | rollercoaster.
        
             | boringg wrote:
             | 100% agree - never realized this when I got into the
             | sports. Cycling lets me go deep into thought and break
             | things apart. Mountain biking is all action so you can
             | actually tune out.
        
         | bosswipe wrote:
         | I've always hated the idea of gyms or solitary exercize because
         | of the social/fun factor. Why do a boring workout when you
         | could play basketball or tennis or a hundred other active
         | social activities. Admittedly it was easier to find sports
         | partners when I was in college but it's still not that hard to
         | find as an adult with a bit of effort.
        
           | Jtsummers wrote:
           | Depends on what you're getting out of the exercise. I never
           | found sports (except when I played soccer regularly) to get
           | me the kind of workout and results I was after (even then I
           | was in great cardio condition and could run for hours, but my
           | upper body was weak). Even my friends who prefer sports still
           | spend a few hours (2-5) a week doing other training,
           | including strength or even just more focused cardio, often
           | selected to support or complement their preferred sport.
        
           | throwawayboise wrote:
           | That's you and that's fine but others prefer more solitary
           | passtimes.
        
       | admax88q wrote:
       | > For this regimen, the animals were placed on little treadmills
       | and required to sprint at a very rapid and strenuous pace for
       | three minutes, followed by two minutes of slow skittering, with
       | the entire sequence repeated twice more, for a total of 15
       | minutes of running.
       | 
       | I wonder how exactly they were "required" to maintain this pace.
       | Sounds like it could easily have been traumatic, which would have
       | its own effects on neurogenesis.
        
       | ipnon wrote:
       | Anecdotally, high intensity exercise like deadlifts or full
       | sprints doesn't leave much room for thinking. But on a half
       | marathon over a few hours, with nothing but the sound of the wind
       | and your feet on the ground, after the first 15 minutes you've
       | already thought through your plans for today, then after the
       | first hour you've already thought back to that mistake you made
       | last week, then it's uncharted territory. So the ability to do
       | some thinking during low intensity exercise surely contributes
       | some benefits to the brain. It's hard to feel any sort of
       | neurosis at the end of a long run for example.
       | 
       | My guess is that increased heart rate and blood pressure
       | increases, and sustains for a long time, blood flow in the brain
       | compared to sedentary activity or short, high intensity exercise.
       | From my experience, lots of lifting was great for improving mood,
       | but it wasn't until I began running medium and long distances
       | regularly that I felt any smarter than my couch potato baseline.
        
         | atat7024 wrote:
         | They don't leave much _oxygen_ for thinking, haha
        
       | User23 wrote:
       | Heavy lifting works the CNS like nothing else. Granted we don't
       | think of recruiting motor units as having anything to do with
       | cognition, but fact is it's all one system.
        
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       (page generated 2021-04-08 23:02 UTC)