People often need to pee when it's cold, and that's not for no reason.
The inside of the body is shrinking to maintain heat, especially in the vital organs, and bladder gets under pressure of surrounding tissue, so for it to shrink it needs to expell urine inside it.
And because that whole process is instinctal, it is alright to think that peeing is not giving off as much energy as shrinking of internal organs is perserving.
---------- Post added at 11:55 PM ---------- Previous post was at 11:51 PM ----------
And in addition, blood vessels in extremities shrink too, so the heat doesn't go off as much in hands and legs. And I have read somewhere that more than 75% of heat loss is lost in extremities.
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That's the spirit!
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