http://articles.mercola.com/sites/articles/archive/2005/11/10/brisk-regular-walking-keeps-off-the-pounds.aspxTwo interesting studies in USA Today highlight the value of regular, brisk walking as exercise. 270 to 300 Minutes per Week In the first study, almost 200 overweight or obese women were placed on reduced-calorie diets and walking programs of various intensityenCommunityServer 2008.5 SP1 (Build: 31106.3070)