Your brain isn’t just resting while you sleep — it’s cleaning itself! 🧠✨ Scientists discovered a hidden system called the glymphatic system that flushes toxic waste during deep sleep, helping protect memory and brain health. Sounds fake… but it’s 100% real science. Are you getting enough sleep to clean your brain? brain facts sleep science neuroscience real science facts mind blowing facts health facts glymphatic system explained how sleep cleans the brain memory and sleep YouTube shorts facts did you know science