Children today are less fit than their parents were at the same age , research shows . That can put them at risk for chronic disease as well . Researchers from the University of South Australia 's School of Health Sciences analyzed and compared 50 studies on children 's running fitness between the years 1964 and 2010 . The CDC recommends children get an hour of exercise involving the entire body .
Children today are less fit than their parents were at the same age , research shows . That can put them at risk for chronic disease as well . The CDC recommends children get an hour of exercise involving the entire body .