Morning Light Is a Better Sleep Tool Than Another App
Before buying another sleep tracker, look out the window. Consistent morning light is one of the clearest signals available to the body clock—and it costs nothing.
sleep
2 posts.
Your Brain Has a Dishwasher — It Only Runs When You Sleep: The Glymphatic System Explained
A 2012 discovery revealed the brain's waste-clearance system: the glymphatic system. It runs primarily during deep sleep, clearing amyloid-beta and tau. New 2026 research shows why sleep fragmentation — not just short sleep — may be the real driver of neurodegenerative risk.