Current physical activity guidelines recommend that children and adolescents do at least 60 minutes of activity each day.
Whether it be muscle strengthening, aerobic activity, or other strengthening techniques, children and adolescents should do at least 60 minutes of activity each day. Getting your heart to beat faster when playing or exercising is good for your body and if you do it long enough, you'll be able to play/exercise longer due to the fact that you will not get wore out faster.