Quote:
Originally Posted by Euthoniel
It's not useless info because it takes humans a long time to die from hypothermia at the temperatures the OP is talking about. Sure, the exact amount of energy is not important, but the point is that humans generate energy and heat. If we didn't, we'd die faster in the cold and at lower temperatures.
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Humans are extremely well adapted to hot dry equatorial regions. Naked we die in the cold much faster than most other mammals.
There is also lots of individual variation especially when dealing with down time as basal metabolic rates vary even more.
Since going past 40, I can now run in 103 F, when in my 20s I literally suffered heat exhaustion in 82 F. But I now sometimes wear a coat indoors when it dips below 70.
I know I would risk hypothermia in light clothing after a few hours anywhere near 32 F.