Polyphasic Sleep = : sleeping 3 or more times during a 24-hour period, in no specific pattern. It is a circadian rhthym disorder that may result from brain injury or dementia, though some adults choose it.Young adults need 7 1/2- 9 hours consolidated sleep at night. See http://www.cyh.com/HealthTopics/HealthTopicDetails.aspx?p=240&id=2053&np=297.
Answered 11/28/2014
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