DID YOU KNOW? “Recent experiments reveal that following days of chronic restriction of sleep duration below 7 hours per night, significant daytime cognitive dysfunction accumulates to levels comparable to that found after severe acute total sleep deprivation.”
“There is ample scientific evidence to support the conclusion that sleep is an essential physiological need state that must be satisfied to ensure survival.1–3 Experimental work on sleep restriction has now begun to focus on the basic question of how much sleep people need each day to be healthy and safe. Chronic sleep restriction is frequently experienced due to medical conditions, sleep disorders, work demands, social and domestic responsibilities, and life style.” – Journal of Clinical Sleep Medicine 2007; 3(5):519-528.(http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1978335/)