While the days of high activity are part of what may cause growing pains, it is important for kids to stay active. Many of the children who have the worst problems with growing pains are those that are infrequently active. If the child is lacking regular exercise, their body will not be ready when they finally have that big day of running around and playing.
As a parent, you should encourage your child to get out and play more. With regular activity, their muscles will get used to workload, and it is likely that the growing pains will become less frequent and less severe. If your child can’t get out on some days, consider teaching them how to do some in-home exercises.
Of course, there might be times when you want to limit the child’s activity. If the child has a particularly busy day and had growing pains as a result, then you might want to let them rest the next day. Sometimes the body does just need time to rest and heal.