Did You Know!
Your Brain Shrinks Every Time You Sleep — On Purpose
During deep sleep, the brain physically contracts by up to 60% at the cellular level.
This creates space for cerebrospinal fluid to flush through brain tissue, clearing out waste proteins linked to Alzheimer’s and other neurodegenerative diseases. This cleanup system — called the glymphatic system — works best only when you’re asleep.
➡️ Sleep isn’t “rest” for the brain — it’s maintenance mode.
