According to a recent article in HealthDay, when overweight/sedentary kids begin to exercise regularly, their ability to think, plan and do math improves. The study took a look at 171 children aged 7-11 who were assigned to groups that did 20 minutes, 40 minutes and no vigorous exercise at all. The researchers found an increase of 3.8 points of scores on cognitive planning skills for children who exercised 40 minutes per day. Increases for those that exercised 20 minutes a day were smaller.
You can review this report in the January issue of Health Psychology.