Scientists have discovered that getting lots of sleep boosts your brain power, and that even having naps of only an hour or two can be beneficial. It seems that the more hours that people spend awake, the more slow and sluggish their brains become. There may even be a link between the tendency of older people to sleep less and poorer memory in the elderly.
US scientists have shown that memories are embedded in the brain in a certain stage of sleep and that sleep is needed to clear out the brain's short term memory storage and create space for new information to enter. A recent study undertaken by the University of California at Berkeley shows that sleep not only cures a person of any effects of prolonged wakefulness, but also at a neurocognitive level moves you on beyond where you were before you slept.
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