Damn, that's impressive! Any grappling experience before that? Probably a wrestler in school weren't you? Yeah,I compete from time to time, not very often. Been a long time since I have been in a grappling tournament and yeah, they take allot out of you. Grappling is the most exhauting thing I think one can do. Oh, ans I've been helping a buddy of mine with a tourney coming up, he has a very good chance of winning it and getting into naga.
I wrestled when I was in school, other than that no grappling experience, just what I've taught myself using online instructional videos.