How Strenuous Exercise Affects Our Immune System • Hacker News Board

Re: How Strenuous Exercise Affects Our Immune System

#171

Post by r00fus » Fri, May 04, 2018, 8:57 PM UTC

CodeCube wrote: post #152

amorphous wrote: post #81

Earlier quoted context omitted.

I still do cold showers, but just finishing with cold water for a short interval, 20 seconds or so. That seems to be entirely beneficial (I don't remember were I read it but there's some other cold shower expert recommending not going longer than that)

I've been doing cold showers after working out ... but when I do, I'm freezing _the entire day_. Does this happen to anyone else?

Does attire affect your temperature perception? I mean, maybe you're just not wearing enough...

Re: How Strenuous Exercise Affects Our Immune System

#172

Post by sushid » Fri, May 04, 2018, 9:03 PM UTC

danmg wrote: post #29

gthtjtkt wrote: post #22

Earlier quoted context omitted.

Crazy, guaranteed. People always overstate their level of fitness by several orders of magnitude on anonymous internet forums.

A 450lb deadlift is not crazy.

But he's also claiming to be fit while consuming 3500 calories a day and pretty much only doing a few 1RM lifts a week.

Re: How Strenuous Exercise Affects Our Immune System

#173

Post by blacksmith_tb » Fri, May 04, 2018, 9:07 PM UTC

whitepoplar wrote: post #161

coastal-fiesta wrote: post #159

Earlier quoted context omitted.

Do you have a link to a CO2 detector that you recommend?

this one is best: https://www.amazon.com/CO2Meter-AZ-0004-Temperature-Relative...

I haven't tried either, but the parent has a +/- 50ppm margin, and this one[1] is +/- 5...

1: http://a.co/afxamMd

Re: How Strenuous Exercise Affects Our Immune System

#174

Post by sideshowb » Fri, May 04, 2018, 9:37 PM UTC

vba wrote: post #146

stevenwoo wrote: post #43

Earlier quoted context omitted.

That may be more due to inadequate preventative sunscreen/protective clothing per outdoor time, every one who spends time outdoors without it shows signs of skin aging like the a/b test in one, truck drivers, with the side closest to window showing significantly more wear and tear versus the interior facing side. In addition to sunscreen, there are nowadays a lot of arm/leg covering just for SPF protection even in ho…

Eyewear? Like sun glasses. Do the eyes age from natural light?

Yes. Macular degeneration from uv. Sunglasses and car windscreens in the eu must protect against uv by law. Other windows not necessarily.

I have an optometrist friend who says he can tell easily in eye exam which old people have worn glasses or sunglasses and which haven't.

Re: How Strenuous Exercise Affects Our Immune System

#175

Post by SketchySeaBeast » Fri, May 04, 2018, 9:38 PM UTC

mkirklions wrote: post #120

jumpmancw wrote: post #24

Earlier quoted context omitted.

It's actually very bad advice, do not do this. All of the literature will plainly tell you this is a bad idea.

After doing strength training for years, it is all part of the routine. You cannot do 5x5 deadlift sets once you are past 4 plates.

You can, but it's not a lot of fun. I did it for years as a modified BBB element in 5/3/1. I have, at various times done 5x5 squat past 4 plates as well. Didn't last more then 3 weeks before I had to back off, I'm too old to recover from that, but I was working Texas Method at 415 lbs, which was just as hard as it sounds.

Re: How Strenuous Exercise Affects Our Immune System

#176

Post by DamnYuppie » Fri, May 04, 2018, 10:10 PM UTC

bluGill wrote: post #18

DamnYuppie wrote: post #8

Earlier quoted context omitted.

Best to hunt when you are loaded up on fuel. Don't want to be hunting when energy is low as you will most likely be less successful as your focus, patience, and response times will all be lower. Hunting isn't like going to the store, success isn't guaranteed.

That is why you hunt when you are "out of fuel": you can try to hunt just after you eat, but when you fail you get to try again while "out of fuel". (Out of fuel in quotes - presumably the body has enough energy stores for a few more hunts even when it didn't find anything to eat the day before.)

My comment was definitely taken out of context, I didn't mean to eat and run out the door. The intent was you need to be well fueled and not depleted.

Re: How Strenuous Exercise Affects Our Immune System

#177

Post by jaequery » Fri, May 04, 2018, 10:39 PM UTC

i think its not the exercise but the rest that follows after a strenuous activity that makes you prone to get sick. its been my theory that if you rest like you are on your last breath, your immune system stops being active. but if you stay active and keep moving your body like you have to survive, your immune system is boosted.

ive tested this theory time and time and seems to be on point.

there have been a number of times when i was feeling sick and instead of resting, id go out in the cold freezing and walk outside for hours. next day i would be completely healed.

but when im just home bed ridden that sickness can linger for days or even weeks.

im also a huge fan of taking cold shower the moment you feel like you are carching a cold. it works way too often to be a coincidence.

Re: How Strenuous Exercise Affects Our Immune System

#178

Post by WoodenChair » Sat, May 05, 2018, 12:42 AM UTC

sternocleidom wrote: post #140

WoodenChair wrote: post #103

Earlier quoted context omitted.

> I have a PhD from a top institution I'm sorry but any comment that starts out "I have a PhD from a top institution" reeks of Appeal to Authority: https://en.wikipedia.org/wiki/Argument_from_authority Then you appeal to science without actually citing any science, but yet more anecdotal data and thoughts from your own mind. Your arguments are just not very strong because they're all coming from your own experience a…

I cited my scientific qualifications to demonstrate that I am uniquely positioned to assess the quality and scope of the scientific research we are discussing and - crucially - the interpretations thereof. Most on HN lack the background knowledge and training to usefully interpret a review article like this, let alone a journalistic simplification. Yes, I cite "thoughts from my own mind", a mind which has spent years…

> ...I am uniquely positioned to assess the quality and scope of the scientific research we are discussing...

> Most on HN lack the background knowledge and training to usefully interpret a review article like this, let alone a journalistic simplification.

It seems like you can't help but belittle the audience you're replying to. It comes across as if you're saying "I'm the elite academic talking down to all of you plebs." You may have some good ideas but your tone and arrogance suck. And I think you'd be surprised by the "academic qualifications" of many of the people on HN. Many in this audience are perfectly capable of understanding the article. You're not "unique."

Re: How Strenuous Exercise Affects Our Immune System

#179

Post by dorfsmay » Sat, May 05, 2018, 1:22 AM UTC

naasking wrote: post #102

donovanh wrote: post #36

Earlier quoted context omitted.

I think the opposite. People that fast for a period (> 16 hours) report improved energy levels. This may be because after a while the body enters a ketogenic state where it burns body fat, which is a great source of energy and perfect for when on the hunt.

> I think the opposite. People that fast for a period (> 16 hours) report improved energy levels. This may be because after a while the body enters a ketogenic state where it burns body fat, which is a great source of energy and perfect for when on the hunt. Ketogenesis requires over a week of carb restriction IIRC. I think fasting yields energy because the body increases various stress hormones to push you to find f…

No, it has to do with insulin levels. Google "Jason Fung insulin".

Re: How Strenuous Exercise Affects Our Immune System

#180

Post by DrScump » Sat, May 05, 2018, 2:48 AM UTC

naasking wrote: post #101

boris wrote: post #4

Earlier quoted context omitted.

Why would you go run (hunt) if there is still stuff (food) in your gut.

Are fed hunters statistically more likely to successfully hunt than unfed hunters? It seems plausible, so hunters that took advantage of their fed state would have had an adaptive advantage.

As far as we know, humans' originally competitive advantage in hunting was long-distance running. Game could out-sprint humans but not out-distance human hunters. So, after successfully running down game, they must have had enough in the tank to complete the kill. This practice is still evident in some African tribes.