All fighters of a certain level train hard and are, more often than not at least, in shape (especially compared to non-athletes, and really compared to most athletes in other sports). But some had a gift for it. They took it to another level. They could endure the kind of training that raised their endurance to ridiculous heights. They fought through fatigue to find a second win, and a third and fourth if necessary. Who are some who strike you this way? I’ll cite a couple of examples and let the forum have its say: 1) Rocky Marciano. Dude was a conditioning freak. If he was of only average championship shape I don’t think he’d have been the fighter he was. 2) Troy Dorsey. Kickboxing background, not a stylist or particularly correct fighter by the book. But Troy would start punching when the first bell rang and at the end he was still punching at the same pace. Do what you will, you wouldn’t wear him out nor dent his will. Who else ya got?