Conversation so far:
where does a boxer's power come from
All power comes from the ground because your legs are connected to the ground, they are most responsible for pushing off the ground to generate power throughout your body
where does a boxer's punching power come from
The chest muscles generate the most punching power out of your upper body muscles
what do the abdominal muscles do in boxing
Your abs allow you to connect the force generated by all your limbs into one powerful punch and help you breathe and allow you to take frontal body shots

Question: what is the function of the shoulders
Self-contained rewrite: what is the function of the shoulders in boxing