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Exercise Releases Brain-Healthy Protein

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Re: Exercise Releases Brain-Healthy Protein

#151

Post by damienkatz »

KVFinn wrote: post #143
damienkatz wrote: post #56

Earlier quoted context omitted.

Wondering if you might have an undiagnosed medical condition. I've been very a active exerciser my whole adult life. It's part of my identity. Last year I started suffering from chronic fatigue. Exercise began to hurt. It hurt when I did it. It hurt afterward. I was tired all the time. I was gaining weight. I stopped exercising. It brought me no relief. Only resting did. I knew something was wrong. Went to Doctor. Tr…

>I was on my own to figure this. I finally found out a treatment that works. Salt supplements and licorice root to address adrenal insufficiency. Day and night difference. How did you find out this is what you needed?

Trying many different supplements.

Thought maybe I had mold in my house. Tested that. Maybe I'm allergic to my bedding. Got s new mattress and beefing.

Thought it might be kidney related since I had back pain in my flanks. Thought it might be my gallbladder. Thought it might be my liver. Tried various foods and supplements. Nothing helped.

Thought it might be thyroid related perhaps due to iodine deficiency. So I started taking table salt that has iodine in it. Started feeling less muscle pain immediately. Then started iodine tablet supplements. Pain returned. Then tried just salt tablets. Found relief. Then researched and found adrenals regulate sodium. Then found out licorice root blocks an enzyme that metabolizes cortisol, which is produced by your adrenal glands. Tried that. Fatigue disappeared. Sleep improved. Pain gone. Started losing weight.

So basically trial and error over many months. I'm only mentioning a small number of things I tried. Doctor was no help. But a better Doctor probably would have suggested better tests and things to try. But how would a normal person know their doctor is letting them down? Shit is hard.

Re: Exercise Releases Brain-Healthy Protein

#152

Post by mehwoot »

searine wrote: post #144
mehwoot wrote: post #136

Earlier quoted context omitted.

The person you are replying to didn't say "expend more energy", they said "exercise more", and the link you gave comfirms that: As expected, physical activity level, PAL, was greater among Hadza foragers than among Westerners.

>As expected, physical activity level, PAL, was greater among Hadza foragers than among Westerners. Within a standard deviation. Higher on average, but not much, and not significantly. No where near enough to exert selection pressure.

Within a standard deviation (just) of the hunter gatherers, but not for Western males.

PAL is 2.26 +- 0.48 for Hadza male and 1.81 +- 0.21 for Western Male. That's an average 25% difference in activity. I'm not a biologist but it seems like that could surely be significant.

Especially if the protein being talked about is generated by strenuous activity above some level. 25% total difference in activity could be a very large difference in activity above a threshold, since both groups are going to spend a lot of the day sitting around, sleeping or walking slowly.

Re: Exercise Releases Brain-Healthy Protein

#153

Post by _0w8t »

searine wrote: post #104
_0w8t wrote: post #101

Earlier quoted context omitted.

This does not imply that, for example, a daily or weekly peak of energy expenditure was the same. As training once per week for 15 minutes with weights is enough to grow muscles, it could be that hunter/gatheres needed to release energy at the max level like running away from a lion much more often than we do nowdays and during those releases the brain also had to work hardest.

>during those releases the brain also had to work hardest That is speculation, and is unintuitive. Why would the brain "work hardest" when running? Why would modern humans not exert the same forces during sport? Why would humans, the top group-oriented predator, run from a lion? The data linked above shows that observed Physical Activity Levels and caloric use are comparable to modern day. Stop inserting your own ass…

The data do not indicate that we experience the same need to work at max energy for brief periods of time as hunter/gatheres. Besides running away from predators in most efficient way, consider throwing оf javelins or stones during hunting. It requires a very precise muscle work at max energy after intense brain activity of target selection. Modern day life does not involve that, yet evolutionary this combination of brain/muscle work at peak could be advantageous.

Re: Exercise Releases Brain-Healthy Protein

#154

Post by [deleted] »

woodandsteel wrote: post #99
searine wrote: post #81

Earlier quoted context omitted.

You are assuming Hunter/Gatherers expend more energy than modern humans, which is not true ( http://journals.plos.org/plosone/article?id=10.1371/journal.... ) Physical activity levels were also within a standard deviation of one another (between western and h/g populations). The brain evolved in similar conditions to modern man. I would argue current conditions are far better for the brain in terms of good nutrition…

As far as calories go, exercise doesn't have much impact. And maybe the Hunter/Gatherers are more efficient in their metabolisms. As far as exercise goes, maybe one standard deviation is enough to produce a brain effect. And maybe there is a lot of variation within modern populations, with many far enough below the average to have a significant effect. I find it really hard to believe that any healthy Hunter/Gatherer…

[deleted]

Re: Exercise Releases Brain-Healthy Protein

#155

Post by ObeyTheGuts »

jey wrote: post #3

The connection between exercise and brain health has now been super conclusively and astonishingly shown, but what are some possible evolutionary reasons for this connection? Maybe the extra energetic investment in brain health is only justified when there is an energetic surplus, and doing exercise correlates with having extra energy available? (As opposed to starving and thus needing to conserve energy.) But that d…

To me it is very obvious that physical activity = you are being active and will need more brain power to proccess all the activity, while being inactive means brain power will be energy waste. As only very recently u can do high intellect stuff like computer work while sitting.

Re: Exercise Releases Brain-Healthy Protein

#156

Post by ObeyTheGuts »

copperx wrote: post #133
mathattack wrote: post #109

Earlier quoted context omitted.

Fair point. I guess by smart I'm thinking "least work for best grades" but that's a very loose definition. Also - it's a very small sample size. And if I look more broadly... 2 of the seemingly "dumbest jocks" I knew in college went on to become doctors, one at the Mayo clinic. So perhaps their intelligence was showing in other areas until they got out of school.

Similarly, one of the 'dumb jocks' from my high school just graduated with a PhD from Harvard, which means humans are awful at estimating the intelligence of others.

Anyone who wasted precious time to get Phd is a retard in real world brosky.

Re: Exercise Releases Brain-Healthy Protein

#157

Post by stared »

jey wrote: post #3

The connection between exercise and brain health has now been super conclusively and astonishingly shown, but what are some possible evolutionary reasons for this connection? Maybe the extra energetic investment in brain health is only justified when there is an energetic surplus, and doing exercise correlates with having extra energy available? (As opposed to starving and thus needing to conserve energy.) But that d…

Neurons evolved from muscles. After exercises muscles needs to be repaired (due to microdamages); it is not unreasonable that there is some positive side-effect for neurons as well.

Re: Exercise Releases Brain-Healthy Protein

#158

Post by pyre »

decisiveness wrote: post #140
copperx wrote: post #133

Earlier quoted context omitted.

Similarly, one of the 'dumb jocks' from my high school just graduated with a PhD from Harvard, which means humans are awful at estimating the intelligence of others.

Or, more specifically, humans are awful at estimating the intelligence of others when they assume those with a special degree are more intelligent.

Or, you know, someone obtaining a PhD breaks the "dumb jock" mould without necessarily being more or less intelligent whomever it is that you are referring to.

Re: Exercise Releases Brain-Healthy Protein

#159

Post by jschwartzi »

agumonkey wrote: post #117
bitL wrote: post #66

Earlier quoted context omitted.

Real runner's high means you started damaging your muscles and brain flushes endorphins to your blood stream in order to keep you being able to continue without experiencing debilitating pain in case you are running from a disaster/predator/death in the last attempt before you cease to be able to move. Not something you'd want to achieve repeatedly.

Then I'm not sure I ever got Runner's High. I did get Runner's Crave after one week tied to a bed. I couldn't stay in place and was anxious all the time, fantasizing about climbing the stairs between the hospital floors.

I get this after 3 or 4 days of inactivity. When I'm like that I have to exercise or I can't sleep.

Re: Exercise Releases Brain-Healthy Protein

#160

Post by jschwartzi »

delecti wrote: post #138
jtuente wrote: post #77

Earlier quoted context omitted.

> a lot of people WONT exercise though Honestly, considering the overweight and obese population is growing we have a problem with systemic overeating that needs to be corrected first. It doesn't matter how much exercise you do if you eat more than you need.

Even if you grant that many overweight/obese people merely won't exercise, certainly at least some people can't exercise.

The important question is how many people _can't_ exercise, and why, and what exercises have they tried?
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