http://articles.mercola.com/sites/articles/archive/2002/03/16/animals-calories.aspxThough health experts often cite reduced physical activity levels among people in developed nations as one of the main contributors to the rising problem of obesity, it has been unclear just how sedentary people have become. Dr. Steven Heymsfield, deputyenCommunityServer 2008.5 SP1 (Build: 31106.3070)