arm punches? I guess you haven't watch enough Anderson. 18yrs+ of mma recorded , plus MT fights & boxing, and countless times of full-on sparring (trying to ko each other) from chute boxing, Brazilian Top team to black house. this is his first heard of KO.
what's the point, anways?
I thought you knew if you were hit right on the button, it's time to take a nap.
hell, even LL tasted the canvas!