hi my baby boy is two years five months.he is very much active.he likes to play with children. he plays running climbing jumping almost every thing n physically very much active. but the problem is he started speaking some words n understand things. but he can't control his hand and legs while excited n playing with other children. he touches or plays with them n but sometimes it feels like he is hitting them as he is very fast.he can't control his excitement sometimes. does this will be end up after his third year??he thinks he is playing so I just control his hand so that anybody else is not injured. please suggest what age his excitement towards people will be controlled?? he plays normally but suddenly he becomes fast. I'm really worried