This entire cycle takes about 90 to 110 minutes to complete, typically each stage last 5 to 15 minutes. The first stage of sleep is light sleep where people drift in and out of sleep. In this stage, the eyes move slowly and muscle activity slows. During this stage, many people experience sudden muscle contractions, preceded by a sensation of falling. Moreover, the following phase consists of eye movement which soon stops and brain waves become slower with only an occasional rapid bursts. As the body begins to prepare for deep sleep, the body temperature begins to drop and the heart rates slows. After phase two follows two periods of deep sleep before the final stage of REM sleep. In stage three, extremely slow brain waves called delta waves intersperse with smaller, faster waves. It is during this stage that a person may experience sleepwalking, night terrors, talking during one’s sleep, and bedwetting. These behaviors called parasomnias, and tend to occur during the transitions between non-REM and REM sleep. Furthermore, the final stage of deep sleep entails the body producing delta waves almost exclusively. If people roused from this state feel disoriented for a few minutes.Uniquely, deep sleep’s purpose is to release human growth hormones, restores the body, muscles from the stresses of the day and, the immune system restores itself. Finally, the final stage of the sleep cycle called REM sleep, brain waves mimic activity during the waking state, physically, the eyes remain closed, but move rapidly from side-to-side, it is in this stage where the dreaming occurs. Although information regarding REM sleep is futile, scientists have already discovered mountains of information over the past
This entire cycle takes about 90 to 110 minutes to complete, typically each stage last 5 to 15 minutes. The first stage of sleep is light sleep where people drift in and out of sleep. In this stage, the eyes move slowly and muscle activity slows. During this stage, many people experience sudden muscle contractions, preceded by a sensation of falling. Moreover, the following phase consists of eye movement which soon stops and brain waves become slower with only an occasional rapid bursts. As the body begins to prepare for deep sleep, the body temperature begins to drop and the heart rates slows. After phase two follows two periods of deep sleep before the final stage of REM sleep. In stage three, extremely slow brain waves called delta waves intersperse with smaller, faster waves. It is during this stage that a person may experience sleepwalking, night terrors, talking during one’s sleep, and bedwetting. These behaviors called parasomnias, and tend to occur during the transitions between non-REM and REM sleep. Furthermore, the final stage of deep sleep entails the body producing delta waves almost exclusively. If people roused from this state feel disoriented for a few minutes.Uniquely, deep sleep’s purpose is to release human growth hormones, restores the body, muscles from the stresses of the day and, the immune system restores itself. Finally, the final stage of the sleep cycle called REM sleep, brain waves mimic activity during the waking state, physically, the eyes remain closed, but move rapidly from side-to-side, it is in this stage where the dreaming occurs. Although information regarding REM sleep is futile, scientists have already discovered mountains of information over the past