I used to teach black belt level kenpo classes at a local school, and even people with a couple of years of martial arts training wouldn't have been able to either keep up with the physical intensity or participate in the training at that level. I had a black belt workout at my house a few weeks ago where we trained, combatively, to the point of exhaustion and minor injuries. Beginners wouldn't be able to keep up with that. And we aren't professional athletes. We're just some dudes. Civilians. Average Joe American. Hell, I'm a hundred pounds overweight and I've run fit young men into the ground in our training. You can't jump in at the top level. It takes years to adjust to that kind of training. Even when you aren't doing it professionally. -Rob