Those who sleep well seem to have fewer enemies

Our sleep pattern varies considerably. Some sleep late in the night and wake up late in the morning while some lare early to bed and early to rise types.  Restriction of sleep time and medical and psychological disorders influence sleep patterns. Sleep offers natural state of rest. Our body does most of its repair work during the sleep. During sleep, our neurons are rejuvenated. Sleep regularity is important for maintaining our internal sleep-wake biological clock. A regular sleep schedule makes us more alert, compared to sleeping for the same amount of time, but at different hours. Continuous sleep gives better rejuvenation than disruptive sleep, six hours of solid sleep is more restorative than eight hours of fragmented sleep. Too little sleep is not good, nor is too much. During sleep our brain is busy processing the day’s information so that it can be used more effectively in the coming day. Sleep helps in identifying what information is worth keeping. Sleep is critical to learning, remembering, and staying healthy.
Our brain doesn’t shut down during sleep. During sleep our brain is busy processing the day’s information so that it can be used more effectively in the coming days. Sleep has the ability to stabilise memory. Studying all night may help you cram for the exam but it won’t make the material stick. Our biological timekeepers prepare us for various eventualities and opportunities. By synchronizing our biological clocks, we can make more efficient use of our time. The clocks tell us when to wake up, and when to sleep. The variation in the clock genes makes one an early bird or a night owl. It seems, sleep provides the clarity we need to piece together life’s puzzles. Research indicates that brain utilizes sleep to flush out waste toxins.
A new born sleeps 16 hours a day, 6 years-olds 11-12 hours a day, adults 7-8 hours, and older people sleep a bit less. It seems, duration of sleep depends upon the danger of predators one is likely to face. Lions have few predators, and they sleep for 12-15 hours. Some animals sleep for 4-5 hours, as they have many natural predators. Insects don’t sleep, because the whole world is after them. Different theories have been proposed to explain the necessity of sleep, as well as the functions and purposes of sleep. William Dement, the co-discoverer of Rapid Eye Movement sleep, has given us the most valid reason for sleep; the only reason we need to sleep that is really, really solid, is that we get sleepy.