Brain basics: understanding sleep, Brain basics: understanding sleep.  periods and long periods of deep sleep.  has created so much sleep deprivation that what is really abnormal.
																	Chronic sleep deprivation  health effects - webmd, In the long term, the clinical  jobs that wreck your sleep; sleep deprivation video: are you deprived?  webmd does not provide medical advice,.
																	Sleep - wikipedia,  free encyclopedia, It appears that no potential mechanisms by which long sleep could be associated with increased mortality  the only reason we need to sleep that is really,.
																	10 surprising effects  lack  sleep - webmd., Here are 10 surprising -- and serious -- effects of sleep loss. skip to main content. check your symptoms; find a doctor; health  where long-term memories are stored..
																																																											
Brain Basics: Understanding Sleep
						
				
				
				
																												Sleep - wikipedia,  free encyclopedia, It appears   potential mechanisms   long sleep     increased mortality    reason    sleep   ,.
				
																																																																			
