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Luba · 05-19-2008, 10:52 AM

BBC NEWS | UK | Magazine | Why should we have eight hours' sleep?

It's all down to genes and whether we feel alert during the day...

05-19-2008, 10:52 AM	#1 (permalink)
Luba Moderator Join Date: Jun 2005 Posts: 12,798	Why Should We Have Eight Hours of Sleep? BBC NEWS \| UK \| Magazine \| Why should we have eight hours' sleep? It's all down to genes and whether we feel alert during the day...