http://articles.mercola.com/sites/articles/archive/2006/09/14/how-children-can-beat-obesity.aspxVigorous, sustained exercise is more effective at helping children stay fit than low-intensity exercise. More Than 40 Minutes A recent study of almost 800 children, ages 9 and 10, measured their activity levels over four days. Those children who engagedenCommunityServer 2008.5 SP1 (Build: 31106.3070)