although people assume that boxers do a huge amount of pushups and develop a strong chest, while I've been training lately, I've noticed chest strength isn't as important as your back. The muscle groups that seem to be feel the most "burn" when I train are shoulders, biceps, and back.

I would imagine a strong chest is necessary for quick push away motions like jabbing or literally, pushing away, but a strong back seems to me so much more important when you're doing the full-range lunging punches. (crosses and uppercuts).

But chest muscles vs. back muscles = nothing if there isn't a strong core to support it all