Physical education experts recommend parents keep their kids active when they’re not in school. Martin Wurmlinger, a physical education teacher at a Los Angeles middle school recommends structured activities, such as creating a circuit program that covers all five areas of fitness: cardiovascular endurance, muscle strength, muscle endurance, body composition, and flexibility. Examples include pushups, abdominal crunches, jumping jacks, squats, and stretching. He adds, “I encourage students to do physical fitness activities with friends or family. That’s usually more fun and a great motivator.” University of California, Los Angeles, July 2016