Sleep and dreaming: The how, where and why?

Within a few hours of reading this you will lose consciousness and slip into a strange twilight world. Where does your mind go during that altered state – or more accurately states – we call sleep? And what is so vital about it that we must spend a third of our lives sleeping? In these articles, we review the latest ideas on why we sleep and look at new ways to enhance its benefits. 

Source and read more:
http://www.newscientist.com/special/sleep?cmpid=NLC|NSNS|2013-0402-GLOBAL|sleep&utm_medium=NLC&utm_source=NSNS&utm_content=sleep

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