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Overview, Stages of Sleep

Post a new topicby contentuser on Wed Dec 19, 2007 11:53 am


Overview


Sleep is absolutely essential for normal, healthy function. Scientists and medical professionals do not fully understand this complicated, necessary, physiological phenomenon. According to the National Institute of Neurological Disorders and Stroke about 40 million people in the United States suffer from chronic long-term sleep disorders each year and an additional 20 million people suffer occasional sleep problems.


There are more than 70 different sleep disorders that are g...Read the full article

contentuser
 
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