http://articles.mercola.com/sites/articles/archive/2003/05/31/adult-exercise.aspxAbout one in 5 American adults takes on a high level of physical activity, while one in four engage in little or no regular physical activity, according to a report by the Centers for Disease Control and Prevention (CDC). The report, which used data fromenCommunityServer 2008.5 SP1 (Build: 31106.3070)