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Written by admin
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Friday, 11 August 2006 |
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Another mystery about sleep is that no two persons need the same amount of sleep. Dr. Nathaniel Kleitman, Associate Professor of Physiology at the University of Chicago, who conducted years of extensive experiments at the University’s "Sleeping Laboratory" says that there is no more a normal duration of sleep than there is normal height and weight.
A study of 25 subjects spread over thousands of nights showed that the average amount of sleep needed to feel well rested is seven-and-a-half hours, though individuals varied from six to nine hours. According to Dr. Demmis Williams, a noted authority on sleep, the amount of sleep needed for an individual’s well-being, is determined by what he feels he needs, not by what other people, including the doctor, think is reasonable. On the whole, women sleep from 45 minutes to one hour more than men. The amount of sleep required varies at different ages as follows : - New Born: 18 to 20 hours - Growing children: 10 to 12 hours - Adults: 6 to 9 hours - Aged persons: 5 to 7 hours
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