MLR,
Welcome to HSBBW. You will find a number of opinions here. Enjoy them and have fun here. This site kept me very entertained while I was in KSA.
I couldn't say much about your son's velocity since I am no expert. From what I hear here, heat is good. And as Dad04 suggests, make sure the kid is getting qualified training from a profe$$ional if he wants to stay healthy.
I sent you a PM.