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Why do we need sleep?

Shkolazhizni.ru :.: Article 13.08.2019 at 21:00

Shkolazhizni.ru :.: Article

To study in Detail and understand the mechanisms of sleep began to end is possible only with the advent of modern technology. Although this topic has interested researchers for a long time, technical progress has helped to figure out what a dream body is here not for vacation, as previously assumed. Today, sleep is considered as a mechanism of self-regulation of body functions, not just recreation. The process of sleep is not uniform, so the scientists studying human physiology, divided into two phases: 1. Slow sleep, during which the restoration of damaged during the day tissues and loss of energy and accumulation of energy reserves for future activity. It is noticed that the duration of this sleep phase depends on the intensity of physical activity during the day. More than per day of the spent energy, the longer it will slow sleep. This, apparently, is the increased sleep duration in patients and recovering people, as well as folk saying: "Sleep is the best medicine". The more the effort, the longer it will slow conphoto: Depositphotos 2. A quick sleep. In this phase, brain activity is close to waking state. There are observations according to which this phase is longer in people who survived to day stress or tension. On this basis, it can be assumed that during REM sleep occurs the systematization of the obtained information. Figuratively it can be compared with sorting of a large array of information from different areas of meaning, topics of importance. The saying "sleep on it" — it's just about REM sleep. Many have noticed that after a full sleep is the answer to the question, which is actively thought about before. In REM sleep there is ordering information in Gravette: Depositphotos is Now known that after falling asleep the body in the following processes: a loss of consciousness, typical for the first stage of NREM sleep.For the second stage of NREM sleep is typically a decrease in muscle activity, body temperature, intensity of metabolism. The tempo of the heartbeat slows down. The perception at this stage is completely disabled. The person continues to be receptive to certain external stimuli. The third stage is characterized by transition into a full deep sleep. This is the only period when the brain activity decreases.During the fourth stage of sleep most soundly and normally, it does not remember dreams, which sees in this moment. This stage is characterized by segoviana and segodenya. The marked increase in brain activity characteristic of REM sleep. Now his work is similar to activity during wakefulness. The muscles in REM sleep retain the relaxed state. With the exception of extraocular muscles: there is a rapid movement of the eyeballs. Such as various functions of the body in REM sleep may lead to sleep paralysis while waking up during this period. This phase, moreover, is characterized by acceleration of pulse and breathing, increased body temperature. It this phase is characterized by the most vivid emotionally charged dreams that a person remembers and is able to present upon awakening. For full recovery you need 4-5 full cycles of snafoo: Depositphotos To restore vitality after a hard day's simple enough physical rest. This requires a special state sleep. In this period there is recovery of strength lost during the day. This complete sleep cycle should be repeated during the night at least 4-5 times. And with each cycle of the fast phase of sleep is taking more time in its structure....

This article describe tags: dream, phase of sleep, human physiology, REM sleep, recovery, leisure