Works Cited:
Smatresk, Neal. “How does caffeine affect the body?” Scientific American. February 1999: n. pag. Web. 18 October 1999.
Livestrong. “Caffeine Effects On The Mood.” Livestrong. Livestrong Foundation, 2010. Web. 18 October 2012. http://www.livestrong.com/article/166493-caffeine-effects-on-the-mood/
Duke Health. “Caffeine’s Effects are Long-Lasting and Compound Stress.” Duke Health, 2004. Web. 18 October 2012 http://www.dukehealth.org/health_library/news/5687
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