As a reasonably successful wrestler in High School (which requires lima-bean talent levels) I found BJJ to be, how should I put it.. wrestler poison! The goal is to submit your opponent, and while my basics from side control, mount holds and back control/defense was already in place as a wrestler, it took me about 6 months to really understand guard defense, as I had never thought that staying on my back was that good an idea, because the goal as a wrestler was to get off your back! Its started to come together, but I have a new respect for the art. Judo aint half bad either. Again, wrestler poison.