Why do we have to sleep?
Sleep is a natural state of rest for members of the animal kingdom. Scientists watched the sleep of mammals, birds, reptiles, fish and amphibians. Although we are still not quite sure how sleep works, nor are we convinced that we understand all sleep functions, scientists were convinced that sleep is necessary to survive.
There are a number of theories about why we sleep and what is happening in our bodies and brains during sleep cycles. At present, however, there is no one prevailing theory. It is quite possible that each of these theories is the core of the truth; that everyone will cooperate to eventually inform about a more complete understanding of human sleep.
Most scientists agree that one of the main purposes of sleep is the restoration and healing of the body. Hormonal and immune function has been observed during specific phases of the sleep cycle. In addition, some studies have shown that sleep deprivation can lead to deficiency in the immune system. Although it is assumed that some may be in place during sleepHat, there were no studies to show that lack of sleep could stop or a stuntman growth.
It has also been assumed that sleep offers an important brain restoration. It is possible that neurons are restored, that brain proteins and some hormones are formed. Some scientists believe that sleep is particularly important for brains in young people. Deprivation of sleep in an early life led to a reduction in brain mass, lasting sleep problems and behavior problems. Although many scientists feel that the main function of sleep is not to restore or improve our memory, it has been observed that people have easier time to remember information if they had enough sleep than if they were to sleep.
Completely alternative theory for these descrnahuře is the theory of "protection and protection" of sleep. This theory claims that human beings do not require 24 hours a day for each day to satisfy the basic needs such as SHRomaining the necessary food and supplies, eating and reproduction. Because not all 24 hours is required, sleep offers rest time when people are not in elements and are therefore exposed to threats. Just as it is less likely that Jaguar is when he is tucked inside his sleeping area, a modern man is less likely to hit by bus while sleeping in his apartment. Of course, this theory, of course, is not thinking what is happening inside our bodies and brains when we sleep.