Why Your Brain Needs Sleep

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In this step you'll learn about why we need to sleep and the Glymphatic System. Sleep is important for our physical and mental health, as it helps our bodies repair muscles and cells, and helps consolidate memories. The Glymphatic System is a plumbing system that pumps cerebral spinal fluid through the brain to flush out waste products. It is believed that the Glymphatic System is 10 times more active during sleep, which is why our brain uses as much energy when we are asleep as it does when we are awake.