A New Hypothesis of Dreaming and Nightmares

Send us Fan Mail Imagine discovering an animal that goes limp, shuts off its senses, and hallucinates for a third of its life. A design flaw, right? Not so fast. 🌙 A 2026 hypothesis suggests sleep is a loop: deep non-REM sleep repairs and flushes the brain, then REM sleep runs a dream-powered stress test to check the work, over and over, all night. ✨ Why your brain's "fluid flush" may matter for long-term brain health ✨ Why REM is a virtual-reality diagnostic with your muscles safely sw...