While you sleep, your brain washes itself clean of the debris from a day of thinking. Your brain cells actually shrink by 60% so they can more easily be washed of daytime toxic waste buildup.
“Scientists say this nightly self-clean by the brain provides a compelling biological reason for the restorative power of sleep,” according to a news article.
Of course we have all heard the stories about sleep-deprived lab animals dying in a few weeks. This research may tell us why.
So, how clean is your brain?