Watch CrossFit Star Obi Vincent Challenge Mr. Olympia Competitor Steve Cook to a Workout

Vincent programs a workout consisting of four exercises: 200 double unders, 100 power cleans, 100 burpees over the barbell, then finishing with a 200cal session on the SkiErg. He explains that he intentionally set out to program the workout in such a way to yield bodybuilding benefits for himself and Cook.

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"Lifting under fatigue, that's why I put the barbell cycle in after the double unders," he says. "You're tired, but guess what, you need to use a lot of your muscle to literally use every single strength you have to cycle that barbell."

Cook states that the double unders were the best part of the workout for him personally, and is pleased with the pump that he's got by the end of the session.

"The muscular endurance aspect of these types of training, there is something to it," he says. "We all think hypertrophy rep range is 8 to 12 reps, but there's something about going hard on a hypertrophy element. Going 10 cals the SkiErg, there's not time under tension in that, so there is a muscular endurance element for sure."

"In CrossFit, there is a