Is this question in strengthening the muscles in the hands and feet? If so, I think those grow along with the training. I think the best thing you can do for your hands is learn exactly where the contact meets. Having said that, when that's all done and said, you have another problem that occasionally needs to be addressed. When I fought (and I know it was partially my fault because I continually put wet hand wraps) I would break open my left index knuckle, and find it extremely difficult to heal. It would callus over and split during heavy training. I'm not suggesting going for a manicure or pedicure, but I suggest taking care of the hands and feet the best you can. I preach at the fighters to invest money into their running shoes because they will get every penny back in the long run. I can't believe how many try to run in what ever they have on their feet and ending up damaging them. Basically, I feel that maintenance and good health to the hands and feet are far more beneficial over power-building.

OldTownBoxing