Quote Originally Posted by Scrap
If you want strong hands try rockclimbing, if you want bad elbows and wrists punch a bag hard
Depending on if the bag is to heavy or not. If you hit something and there is no 'give' on it, then it isn't doing your arms any good.
If it moves enough, then it is alright.
So you would hit an opponent right...but you wouldn't hit a brick wall because the wall wouldn't give.

I agree with Chris. Alot of boxer tend to focus on their muscles and respiratory systems, physically wise. However, the joints and tendons often go un-noticed.
What I do, sometimes because I do forget haha, I take a 1000mg Glucosamine tablet a day. It helps repair cartilage, tendons and joint tissue.