Your brain literally washes itself while you sleep but only if you do this right

Sleep used to be something we simply did: lights out, eyes closed, blink and we trusted our body to reboot overnight but new neuroscience shows that sleep is an active, carefully choreographed process in which brain regions, blood flow and even brain-cleaning fluids change in step. In short, your brain does not so much turn off as shift gears and knowing how it works helps you sleep smarter, think clearer and feel better. You have probably had vivid dreams in the middle of the night and wondered why. Neuroscience shows dreaming and localised wake-like activity can occur even during deep (NREM) stages. In other words, some brain regions keep working while others shut down. It is more like a patchwork of states than a single “on/off” switch. This explains why poor or fragmented