Too many "realistic" fighters and instructors don't do full contact sparring. How can you claim to be the real deal when you don't even take a punch in practice ? Any nerd can talk tough, and indeed, many do. I have a peace of advise that one day might save your life, stop learning from nerds. No matter how bad ass and dangerous a person looks or talks, or how cool his techniques look when preformed slow. If its only done slow and with no resistance, its only theory until proven otherwise. And let me tell you, 99% of the theoretical techniques shatter in real battle. Don't let that happen to you. Train hard from day one. And remember, if it doesn't work under pressure, then it doesn't work at all. Train Smart, Stay safe, Sharir R, ICCS Head instructor.