Super neat from @science.org we know the brain clears stuff out during sleep, but how? The blood vessels squeeze to keep fluid flowing! https://www.science.org/content/article/scientists-uncover-how-brain-washes-itself-during-sleep?utm_source=sfmc&utm_medium=email&utm_campaign=ScienceAdviser&utm_content=distillation&et_rid=51388002&et_cid=5488327
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