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266 Scientists discover a hidden brain “cleaning” effect triggered by movement

ScienceDaily
ScienceDaily · 05/01/2026 23:04 EDT

Scientists have uncovered a surprising link between simple body movement and brain health: every time you tighten your abdominal muscles—even slightly—your brain may gently sway inside your skull. This subtle motion, triggered by pressure changes in connected blood vessels, appears to help circulate cerebrospinal fluid around the brain, potentially flushing out harmful waste.

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