Walker explains how the brain's glymphatic system cleanses toxic waste, preferentially during sleep.
As heard by us
A careful reset on sleep science, drug physiology, and the limits of current human evidence.
Matt Walker and Eric Topol keep this one sober and useful. They revisit what has changed since Why We Sleep, then stay with the hard parts: the glymphatic system, the limits of common sleep drugs, and why natural sleep still has not been fully copied in a pill.
Why you'd press play
When you want the sleep-drug question explained without hype, start here.
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