There are so many different aspects of mixed martial arts you have to cover. You can't just be good at one thing to be a champion - you have to work on your wrestling, kickboxing, boxing, jiu-jitsu, and strength and conditioning. It's hard to find time to fit all those in without getting overtrained.

There are so many different aspects of mixed martial arts you have to cover. You can't just be good at one thing to be a champion - you have to work on your wrestling, kickboxing, boxing, jiu-jitsu, and strength and conditioning. It's hard to find time to fit all those in without getting overtrained.