One key role of sleep involves cerebrospinal fluid, which surrounds and protects the brain. During sleep, CSF helps remove waste that accumulates during waking hours. In a 2019 study, Lewis and her ...
Manipulating how much carbon dioxide a person breathes can crank up the brain's 'sewage system', researchers have found.
Yawning and deep breathing each have different effects on the movement of fluids in the brain, and each of us may have a ...
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