Perhaps the original celebrity endorser of CrossFit, The Biggest Loser<.em> trainer Bob Harper has been very vocal about his love for the short-but-intense workouts. In an interview with Men’s Fitness, he explained, "Jumping into CrossFit was like jumping into the deep end of a pool. These workouts are so compact. I used to do long sessions all the time, and my body started to get beat up. But with CrossFit, it's almost like my body is finally getting a chance to rest while, at the same time, I'm pushing it harder than I've ever pushed it."
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See which stars turn to this intense workout to stay in amazing shape
See which stars turn to this intense workout to stay in amazing shape.