Yawns Hint at Brain Maintenance: MRI Reveals Surprising CSF Shifts
TL;DR Summary
A small MRI study (22 healthy adults) found yawning can move cerebrospinal fluid away from the brain, unlike deep breaths, while both behaviors increase blood flow out of the brain; yawning may serve brain cleaning or cooling, with individuals showing unique yawning patterns. Findings are preliminary and require more research.
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