Originally Posted by wordisbond
I just wanted to know if having a muscular chest negatively impacts a boxers ability to punch? I know most boxers don't do heavy bench presses instead doing push ups to develop their chest. How would it affect your speed, flexibility, etc) What are your thoughts?
Muscular arms are definitely bad because the smaller your arms the faster your punches. The speed punches are thrown using the stomach muscles, not the chest or the arms. The power punches come from torque and from the leg muscles. You can generate more power by keeping your legs spread more widely apart and twisting your hips with your punches.
So the muscles you'd want to train are abs and legs. Abs are for speed and legs for power.