In the U.S. today 30% of all children are overweight. This can be very unhealthy and dangerous, too. Many parents want to prevent this. Therefore, some parents bring their young children to exercise class to help their children stay healthy. In fact, some Infants who are only a few weeks old can attend these classes, too! These parents want their children to enjoy exercise, They hope that their children will grow up to become adults who enjoy exercise, too