Why the need for sleep
The human body is designed in such a way that he needs constant change cycles of wakefulness and sleep. In the dream is almost a third of your life. Sleep is necessary to restore vitality and energy consumed. Insomnia is painful for any living organism. In ancient China, there was a penalty of insomnia. The body of the man was driven to complete exhaustion, not letting him rest.
Sleep is a key indicator of mental health. Man, having the ability to sleep 7-8 hours a day, is a full member of society. People nedosypayuschie or sleeping more hours, as a rule, feel sluggish and unfocused. Just imagine, one sleepless night reduces efficiency by 30% two in a row already at 60%. Five sleepless nights can significantly undermine mental health.
Scientific experiments or "sleeping volunteers"
In 1965 the school student Randy Gardner set a record, no sleep for 11 days. The first day the teenager felt quite natural. After a couple of days he started having headaches. Also began to show the first signs of Alzheimer's disease, that is memory loss. Towards the end of the experiment, the student started the hand tremor and strong hallucinations. He could not concentrate and perform even the simplest tasks. The experiment was terminated.
Later, according to unconfirmed sources, a certain man had a deadline with no sleep in 28 days.
The world record for time without sleep, no one belongs to Robert McDonald, who was able to do without rest and without special stimulants for 18 days and 21 hours. However, scientists determined that this case is rather an exception to the General rule, since the average period without sleep and special harm to health is only 3-5 days.
Life without sleep
Of course, it is impossible. In a few days starts the irreversible change of the General hormonal background. After 5-7 days the cells of the brain, not withstanding the loads start to break, which can lead to irreversible consequences.
Scientists say that when strong overloads the body is capable of so-called "surface sleep", that is, people like not sleeping and doing his job, but the part of the brain thus giving yourself an opportunity to rest.
Of course, experiments with insomnia are extremely dangerous, and you should not tempt your body with samples to set a record. For a full life and good health be sure to give yourself rest and normal sleep.