Still Waters Posted December 14, 2013 #1 Share Posted December 14, 2013 How much do we really know about sleep? There is no single activity that humans do more: if you live to be 90, you will probably spend 32 years asleep. It is as vital for us as eating or drinking water. Sleep deprivation will kill you as surely as starvation. It is an activity we share with every other animal species, from cockroaches to chimpanzees. Yet we do not fully understand why we do it. Sleep scientists are locked in furious disagreements about what it's for. http://www.telegraph...bout-sleep.html 1 Link to comment Share on other sites More sharing options...
Lilly Posted December 14, 2013 #2 Share Posted December 14, 2013 "Sweet sleep that knits up the ravelled sleeve of care" ~MacBeth~ 1 Link to comment Share on other sites More sharing options...
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