Young adults have a natural sleep requirement of about 9 hours a day on average, older adults 7.5 hours. Many people in western societies, however, get considerably less sleep. According to studies, about one-third of the persons surveyed in several industrial countries reported too little sleep. If a young adult sleeps less than 8 hours a night, increased attention deficits occur, which can lead to considerable negative consequences. In sleep clinics there is an increasing number of healthy people who are suffering from the negative consequences of insufficient sleep.

Researchers at the University of Zurich and the Universit…
Disorders and Conditions – Healthcanal.com

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