Although there are still many unanswered questions, because we spend a third of our lives sleeping, we know that a lack of sleep can have very negative consequences. Genetics called fatal family insomnia, middle-aged people gradually lose their ability to sleep. As the name implies disorder as a result of sleep deprivation eventually death. The exact cause of his death is unknown, but the disease is associated with damage to connect the chamber (Gallas et al., 1996).Sleep, and in particular the steps 3 and 4 of the N-REM sleep, it is important role in the recovery of the body. Sleep delay the wound healing process (Murphy et al., 2007), reduced the activity of the immune system (Zager, Andersen Ruiz, Antunes and Tufik, 2007) and results in less production of new neurons in the adult brain (Guzman- Marin et al., 2003). Most of the release of human growth hormone that plays an important role in the recovery of the body's plays, in steps 3 and 4 of the N-REM sleep (Savine & Sonksen, 2000) carried out. A different line of evidence of the case correction of sleep is the behavior of people after intense physical activity. Runners compete Ultra Marathons (races, which is twice the length of a normal Marathon) to larger amounts to the N-REM sleep show the night of the show. It lacks selective volunteers sleep laboratory phases 3 and 4 of the N-REM sleep is possible. After a night of such irregularities, the volunteers usually complain of muscle and joint pains (Moldofsky & Scarisbrick, 1976). Since that time, the N-REM is about one and a half hours each decade decline with age 50 (Van Cauter, Leproult and Shelf, 2000), it is likely that the reduced N-REM is the source of a some muscle and joint aches and pain experienced in older adults.
Sleep is an important role in the consolidation of memories. All night cause the poor performance of the memory and the next two nights sleep is not the lack of sleep quickly (Stick Gold & Walker, 2007) illustrates. Memories projects verbal, emotional, material and process are all better after a sleep time as followed by guards (Gais & Born, 2004? Wagner, Fischer, born in 2002 Wagner Gais and Born, 2001). Needless to say, students who studied material obtained way to get would be a good night.
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