Originally posted by KennethKu
And how does that come by? Improper training, poor conditioning.
Punching is not that complicated. Besides, the knuckles are stronger than just about any part of the physiological structure other than may be the skull and the elbow, that you are likely to strike. It isn't that hard to teach punching with the index and middle knuckles and to align them properly. C'mon, there is no need to complicate things here.
I trained striking using the 3 smaller knuckles (WingChun/Boxing/Jkd punch) on heavy bag (w/pit rocks) and I moved to using the index and middle knuckles (TKD/Karate punch). It is far more efficient to use the 2 larger knuckles. Of course, with proper training and conditioning, they all work just as fine. For a beginner, I would advocate the 2 knuckles punch, cuz you can hit with stronger effect with little conditioning. C'mon, millions of TKD and Karateka cannot all be morons. lol