Your brain has a built-in detox system — but it only turns on when you reach deep sleep. Here’s what most people don’t know 👇 During deep sleep, your brain cells shrink, allowing cerebrospinal fluid to wash through your brain like a dishwasher, clearing out toxins, metabolic waste, and proteins linked to Alzheimer’s and dementia. This process is called the glymphatic system — and it’s one of the most powerful longevity mechanisms we have. But when sleep is poor, fragmented, or too short: 🧠 Bra

Human Brain: Its parts and functions (3D animation)