Why do you feel groggy/like a hangover if you are awake for 2-3 hours then go back to sleep as opposed to just staying up?
Eg you sleep 10pm-2am then 5am-7am, waking up second time is like a hangover.
In: Biology
I’m more interested why sleeping 12 hours feels like I didn’t sleep at all and taking that 1-2hr nap after sleeping that long wakes you up.
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