During sleep, glial cells physically shrink by ~60% of their waking size — pulling apart to open channels that flush Alzheimer's proteins from your brain. This only happens during sleep. Not rest. Not drowsiness. 🧠 Sleep. 💤🔬

Lie on your right side and the valve at the top of your stomach submerges below the acid pool. Lie on your left, it rises above it. Same body. Same acid. 🧪 Entirely different physics. Right-side sleeping measurably worsens acid reflux. ⬅️🫁