In your case, I suggest that you choose low-intensity and short-duration exercise as the basis at first, and it is best to increase the fun and let him stick to it, otherwise you will definitely give up halfway. For example, badminton, football passing or passing, table tennis, cricket and shuttlecock are all interactive sports and will not be boring. It is best to cultivate his interest in sports for more than 30 minutes at a time and gradually increase the amount.