What Your Deep Sleep Cycles Reveal About Brain Health, Memory, and Cognitive Aging
The Brain's Cleaning Shift Only Runs at NightDuring deep sleep, specifically the slow-wave stage that dominates the first half of the night, your brain activates a waste-clearance system called the glymphatic network. Cerebrospinal fluid pulses through channels around your neurons, flushing out metabolic byproducts that build up during waking hours.…
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