eli5 why do we wake up from deep sleep to pee but don’t actually wet the bed ?
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Honestly, the best ELI5 answer is, because sleep is weird, and it isn’t the same as “being unconscious.” Your brain is still active when you are asleep, and still has certain things basically on stand by. So, for example, you know how you wake up when you hear a loud noise? Or even if a bright light is turned on? Your brain is basically, “Hold all my calls unless it is something *important*! I gotta make up a dream where this schlub thinks they are in grade school with no pants on!” Having to pee is basically the same. The brain is going to ignore the bladder unless the bladder is screaming, “HEY! NEED SOME HELP DOWN HERE! WATER LEVEL IS RISING! GONNA BE A FLOOD IF WE DON’T HIT THE RELEASE VALVE!”
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