eli5 why do we wake up from deep sleep to pee but don’t actually wet the bed ?
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There’s lots of reasons for nocturnal bed wetting. One is an overabundance of the chemical that makes you retain water, you literally produce more per and can often be solved another is that you sleep so deeply that you can’t physically react to the need to pee and so eventually you simply go. This is usually solved essentially with reinforcement training using an alarm that detects the wetness efficient in turn teaches the body that you should infact not pee just because you aren’t trying to hold it in. Obviously there’s things like physical issues with the bladder, stress and trauma can also cause it (but importantly bed wetting does not implicitly mean it is) and in fact it’s the trauma of being scolded or humiliated over it that often leads to the condition being worse.
So basically for most people they don’t sleep too deeply and have the right body chemistry to avoid needing to pee so much. Developmentally your body becomes used to the feeling of needing to pee and trains itself to wake you or hold it in.
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