eli5/ why do we have such a tolerance for needing to pee when asleep?

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if i am awake and drinking like I usually do i’ll pee extremely frequently and the accumulation of that fluid is never apparent when looking at me but when i wake up i have so much stuff to pee out that accumulated at the bladder that i look like I’ve just found out i’m pregnant why is it that if i tried to hold it in when i was awake i’d be in a great deal of discomfort but i don’t wake up in discomfort but am visibly swollen with fluid

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Anonymous 0 Comments

It would be dangerous to have your bladder highly full while moving around, because it has an increased chance of rupturing.

But when you are asleep you can afford to have it stretch out more without a big risk. So we evolved to be able to handle a greater degree of bladder stretching while sleeping.

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