Sleep everyone needs, without it we cannot live. Healthy sleep extends life. Quiet, quality sleep allows you to restore the cells of the Central nervous system, it is a powerful prevention of many diseases, strengthens the immune system. Adequate sleep allows the brain to calm down. While you sleep, you recover faster. While sleeping, you're having sweet dreams, something good in them. So sleep is useful and necessary. Need not linger long at the computer or behind the TV with the phone. Better to spend your free time on the dream. Sleep more.