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The World of Sleep

Started by riky, February 23, 2013, 09:00:08 AM

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riky

February 23, 2013, 09:00:08 AM
The World of Sleep

<img alt="" src="http://media-3.web.britannica.com/eb-media//32/92032-050-D7D65CD3.jpg" width="265" height="178" align="right" />Is the adage that human adults need eight hours of sleep correct? It depends on what kind of human adult you are.

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