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Works Cited

1.) Smith, Melinda, Lawrence Robinson, and Robert Segal. "How Much Sleep Do You Need?" Sleep Cycles & Stages, Lack of Sleep, and How to Get the Hours You Need. N.p., Oct. 2013. Web. 22 Mar. 2014.

2.)"Why Is Sleep Important?" - NHLBI, NIH. N.p., 22 Feb. 2012. Web. 23 Mar. 2014.

3.)"Why Sleep Is Important and What Happens When You Don't Get Enough." Http://www.apa.org. American Psychological Association, 2014. Web. 24 Mar. 2014.

4.)"Hotline Information." Sleep: Why Is Sleep So Important? N.p., n.d. Web. 23 Mar. 2014.