It turns out that physical activity can improve not just kids' health, but also their grades. A study released by the American College of Sports Medicine found that 20 minutes of vigorous activity at least three days every week was needed for children to excel academically.
"Physical activity may reduce boredom and increase attention span and concentration," says Dawn Coe, lead author of the study and assistant professor of exercise science at Grand Valley State University. "Increased activity levels may also lead to higher self-esteem. And all of these factors may play a role in the relationship between physical activity and academic performance."