Sleep a must for every human being as well as animals, birds, and insects, but what exactly
is sleep, what are wakefulness, sleeplessness, night awaking, and the mechanism of sleep.
Interested in getting a clear picture and understanding the concept more clearly visit this website and be thorough with the basics of sleep. Read more about insomnia, the causes of insomnia and the different types of insomnia and the treatments available.
Pic courtesy Justin Marty on www.flickr.com
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