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Title: Harold has been trapped underground in a mine for several days. Explain why he i Post by: colleen on Jun 4, 2012 Harold has been trapped underground in a mine for several days. Explain why he is still on a fairly regular waking and sleeping schedule.
Title: Re: Harold has been trapped underground in a mine for several days. Explain why he i Post by: ThePsychic on Jun 9, 2012 Discuss circadian rhythms and the biological clock and the idea that the body has an internal means of monitoring our daily need for sleep.
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