HPE 158 Lecture 4: 4 HPE 158 (4)
24 Feb 2019
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Before thomas edison"s invention of the lightbulb, people slept an average of _____hours a night today americans average 6. 9 hours of sleep on weeknights and 7. 5 hours per night on weekends. 70 million people in the united states are affected by a sleep problem about ______ million. Americans suffer from a chronic sleep disorder, and an additional 20 to 30,000,000 are affected by in a minute sleep related problems. However an overwhelming majority of sleep disorders remain undiagnosed and _____________________. Sleep deprivation and sleep disorders are estimated to cost americans over million annually in lost ___________________, medical expense, sick leave, and __________________ and environmental problems. Sleep apnea, a breathing disorder characterized by brief interruptions of ______________ during sleep, effects as many as _______ million people according to the n i h. Narcolepsy is a chronic neurological disorder that involves your body"s _______________ system. People with narcolepsy experience sudden sleep attacks that can occur at any time.
