My son plays while day, he jumps on the bed etc etc. From last one year while walking his right leg little goes like cramp but he does not feel any pain and whole day busy in jumping, what to do

May be it's because of over jumping..leg muscles get stressed too one is to involve the kid in some other activities too where the child sits and also massage the childs feet and legs at the end of the can also consult your doctor for this..