body punching is a splendid thing! Here's my thoughts. First, as it was pointed out above, learn how to properly throw every punch. Second, understand that the shoulder of the punching hand must be lowered to the level of the target. Third, learn the spots to hit and relentlessly practice hitting them. I made marks on my heavy bag to represent the liver, solar plexus, the "pit" of the stomach, the heart, and made sure that every single time i worked that bag that every intended body punch hit the intended mark. You see throwing a million body shots isn't necessary to wear a guy down; it can be accomplished with a couple, even one, well placed punch. Fourth, learn to avboid punches and to counter. And learn the particular move- say, slip to the outside off a jab and left hook the solar plexus- precisely before you even think of "countering with combinations" or you'll end up not doing a bit of it properly.