The goal is to stay strong, build muscle and lose fat. So, if the stuff you use to burn fat also assists in maintaining strength, well, you got a win-win.
Recently, the guys have begun doubling up athletic dynamic training with interval "fat-burning." It looks like what most people think of as "CrossFit," but this is a shade different. The goal is not to have the best time on a board, but rather to accomplish a medium range goal.
With the hundreds of dynamic moves these guys use – from power cleans to a good ol' fashioned jumprope – they create complexes, compression sets and "dispersals" as a team to push each other's fat burning while keeping their athletic and strength skills high. This sort of exercise instead of traditional "cardio" (yawn! and yuck!) allows them to burn more fat, as well as get their metabolism higher so that they do not need to starve to get lean. Meanwhile, they present healthier bodies in bodybuilding and maintain their endurance for strength contests longer into the "diet."