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The Wall Street Journal

wsj.com

did:plc:i3fhjvvkbmirhyu4aeihhrnv

Recent research reveals we dip into a sleeplike state as our brains flush out waste buildup. on.wsj.com/3MuBM2e https://on.wsj.com/3MuBM2e

2026-02-13T13:00:40.648Z