Darryl Williams - Williams1 Darryl Williams Clara Butler HE...

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Williams1 Darryl Williams Clara Butler HE 101-05 23 February 2011 What is Sleep Apnea? Sleep is very important, and is needed to sustain a healthy lifestyle. Sleep can be defined as a state of unconsciousness or partial consciousness, used as a period of rest and restoration for the body. The body begins to repair itself when it is in a very deep sleep. Not only does the body receive a well-deserved rest, but the brain has an opportunity to restore itself as well. There are different states and stages of sleep. The first state of sleep is non-rapid eye movement, or NREM. There are four stages of NREM. The first stage is a very light sleep in which the heart beats slower and breaths are not as deep. This stage is very easy to awaken from. In the second stage, the brain’s activity slows down and the body stops moving. The sleeper also loses consciousness of their surrounding environment. The fourth stage occurs when the sleeper enters into a deep sleep. When a person is awakened from this stage, they momentarily feel as if they are
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