The answer is both basic and interesting. Sure, 98.6 degrees F is the healthy temperature for a human body, but that’s only because we are pretty good at transferring heat away from ourselves. Your metabolism and your muscles generate more heat than that, but you get rid of it using tricks like breathing out hot air and sweating. Basically, your body works like a heat exchanger. It’s the same sort of system that keeps your refrigerator cool-take the heat from inside a closed space and dump it into the surrounding environment.
I’m sure this won’t stop somone from sticking an air-conditioning unit in our livers or brains.
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