Watching footage of various boxers, I realize that many gyms and trainers have different approaches to training and utilize different tools. I'm just wondering what advantages some of these methods and tools provide and if they make that much of a difference, why doesn't everybody use them? Obviously these tools exist for a reason but I'm curious to what those reasons are. Even with the usual mitts and bagwork, I don't quite get certain aspects. For example, does bagwork offer that much usefulness to top level fighters who can get a dedicated mitt holder? Why hit the bag if you can get a skilled guy to hold the mitts for you for numerous rounds every training session? The only advantage of bagwork over mitts I can distinguish is that the trainer can better see what the fighter is doing and the fighter can hit it harder without worrying about mittholder's hands. Then you get Mayweather Sr. who I have seen do mittwork with his barehands. What does this do? Then there are the various tools such as the punching shield What's the advantage of this over regular mitts? Same goes for trainers who use a towel or those foam sticks to work on their fighters' defense. You also have Floyd Mayweather who has his flashy looking mittwork routine with Roger (which obviously works) then practices going to the body by hitting a guy (forgot his name) wearing a body protector. Based on all the footage I've seen, Mayweather then seems to do the same thing on a bag, but why? Why not just do all your training on an actual moving person? I guess that's a lot of questions but I'm really curious and wondering if I'm missing out on something with my lack of dodging foam sticks or hitting a punching shield.