Active children are less obese. In a 2014 study published in the American Journal of Preventive Medicine, researchers analyzed obesity prevention strategies and their ability to reduce obesity by the year 2032. They found afterschool physical activity programs would reduce obesity the most, 1.8% among children ages 6 to 12. That's twice the projected impact as any ban on child-directed fast-food advertising. An earlier study of college students found that "motives for sport participation are more desirable than those for exercise and may facilitate improved adherence to physical activity recommendations" (Kilpatrick, Journal of American College Health, 2005).