For the low tone parent, yes you can and should do training. I would avoid combat sports like mma, though.
For the parent who's son is teased for lack of skills, 2 things-
1. Make sure he understands the difference between teasing (which is part of boy culture) and bullying
2. You can try a different team if it's bad, but if he sticks with it and puts in extra effort, he's going to have tremendous self esteem when he starts getting good and earns the respect of the other kids.

Anonymous wrote:My son has faced some teasing at school. I have signed him up with some team sports, and he gets teased for his weak skills. Boys can act like jerk and they like to provoke him to see his reactions. I have told him to mind his own business and ignore others. I feel like he is immature. I have not thought of personal training, weight lifting or wrestling. He has low muscle tone, do these sports are friendly to kids with low muscle tone?

You absolutely can do personal training with low tone.

Anonymous wrote:OP, have you medicated the AdHd? That can help a lot socially, especially if he has impulsive behaviors that are socially inappropriate.

Yes, but he reacted badly to all stimulants and Strattera. We are going to try Qelbree

OP, have you medicated the AdHd? That can help a lot socially, especially if he has impulsive behaviors that are socially inappropriate.