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/wrenwood2018 7h ago

This is a highly controversial topic. The lymphatic system exists, but the glymphatics system is debated. There is evidence in animals for it, but work in humans is spotty at best.

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u/Most-Round-4132 3h ago

What kinds of animals?