I still get amused by people who think sleep is a state of nothingness. Or that it’s a time when the body takes a much needed time-out. On some level, it’s true that sleep is a break from busy wakefulness for the body’s renewal processes, but there’s a lot going on up in the brain to make sleep far from a state of inactivity.
And there’s also a reason why youngsters sleep so much that has everything to do with development and high activity. In a recent study presented by the University of Pennsylvania, researchers reported on the value of sleep during early life when the brain is rapidly maturing and highly changeable: