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Why does a small amount of caffeine sometimes make you want to nap and actually make your sleep more refreshing? (self.nostupidquestions)

submitted 5 days ago* (last edited 5 days ago) by cheese_greater to c/[email protected]

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Pure conjectural or anecdotal but it is my intuition that there is something to it

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[–] [email protected] 2 points 3 days ago

There's exhaustion, which builds up and is relieved gradually with sleep, and is effectively masked by caffeine. Then there's the feeling of incomplete/interrupted sleep; maybe the quality of sleep was poor somehow, maybe you were woken up by an alarm in the middle of a sleep cycle, but it's painful, cognitively debilitating, and sticks around like a splinter in your brain. Caffeine doesn't help it at all, but it can be completely relieved by a nap in which you succeed in falling completely asleep even just for a few minutes, which caffeine does not prevent from happening.

I don't know how much of that is objectively how it works for everyone, but that's how I understand it.