Not true. Yes it is harder to knock down a larger person, but a trained fighter knows how, where and when to hit. For example, it doesn't matter how much muscle you have, your solar plexus is always exposed. One good shot and you are on the ground gasping for air like a trout flapping around on the dock. I weigh in at 210lbs (black belt in TaeKwonDo) and have had the crap beat out of me by a 120lb girl, but I had no problem controlling a 200lb ex CFL linebacker. TKD teaches that you use the legs more simply because your skinny legs will always have more power then the big guys arms. Plus you can hit the guy effectively with kicks from a range that the he cannot reach with his arms. Skill does matter.

Bryan Kowalchuk, MBA, B.Tech, MCSD