http://articles.mercola.com/sites/articles/archive/2001/01/14/sleep-part-one.aspxA recent survey of university students in Utah has found that students who habitually go to bed late and sleep late the next day have lower grade point averages (GPAs) than students with early-to-bed and early-to-rise sleeping habits. Researchers at BrighamenCommunityServer 2008.5 SP1 (Build: 31106.3070)