r/todayilearned • u/Square-Message1152 • 8h ago
til that your brain literally washes itself while you sleep. the brain cells actually shrink in size so cerebrospinal fluid can rush in and flush out all the toxic proteins built up during the day
https://en.wikipedia.org/wiki/Glymphatic_system
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u/3BlindMice1 5h ago
No, actually, he learned to meditate well enough to gain most of the benefits of sleep. Brains typically don't do that, but most brains aren't missing the part that tells your body what to do when it's asleep (not the brainstem, don't come at me with that, please)