Yeah, it's not the energy that is the problem with over training. My daughter is a keeper and has had that exact same scenario play out, too. As others have said on this thread, active kids can go almost all day long. I don't know how old your son is, but I'll just tell our experience. From 9-13, my daughter was an endless well of energy. Multiple practices and multiple games never bothered her. We'd do a two tournament games and then she'd guest play in a local league same day. Played club soccer, middle school soccer, and middle school lacrosse. Never injured. Never missed a practice or game. Year round GK training. Summer before freshman year, she decides to do HS soccer and HS volleyball on top of club soccer. The HS soccer tryouts were 3hrs a week every day of brutal running and constant high level effort. Volleyball tyrouts and summer conditioning were even tougher. Club season and HS VB overlap, and she's running from one practice to the next. Plus keeper training. At this point, she also hits her growth spurt. To top it off, all four coaches (2 soccer head coaches, 1 GK trainer and 1 VB coach) expect 100% commitment and all have their own very rigorous conditioning drills. She gives it her all. But by October, after an entire summer of non-stop activity, she is the walking wounded. She's got a displaced SI joint requiring weekly chiro visits, a growth plate injury in one foot and is chronically spraining the other ankle. Important to note that at least 1/4 of her club soccer team and about the same percentage on her HS team all start going down with similar or worse injuries. To me it was plain and simple. Too much high intensity, high impact training, not enough recovery time. Despite being one of the best freshmen on the VB team, she had to drop it for next year. We learned our lesson, and now we make sure there is always ample recovery when she does marathon training sessions or has multiple games on the weekend. The weight and power of 14-15 year olds playing soccer is on a different level than 8-10 year olds. And the violence and impact injuries sustained from 5'8' 150 lb soccer players colliding at full speed is not something 80lb gymnasts or dancers ever have to deal with. So my advice is not to use your kids' energy level or eagerness as a gauge to decide if it is too much training. She/he needs to learn to listen to their bodies and if they start experiencing pain, they should not be pressured into playing through it or sucking it up to look good for the coach. Hopefully the coach in the OP is smart enough to set up training regimens that account for recovery time. But given my first hand experience with club soccer coaches, I wouldn't count on it.