Crossfit Gyms' cultish Painiacs love their max-out-and-do-it-again training regimen. Their critics are getting a workout too
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Outside, it’s a few degrees south of zero. But inside this CrossFit gym in Grand Forks, N.D., a half-dozen fitness nuts–three men, three women–are just warming up. Tom Harmon, a former Army reservist who runs this 5,300-sq.-ft. space in a mall, is about to put his troops through the workout of the day: five dead lifts, raising a barbell from the floor to hip level; then seven burpees, a CrossFit favorite in which you hit the floor from a standing position, do a push-up, then jump in the air, repeat and rinse; then nine wall ball shots, tossing a medicine ball above a marked spot on the wall.