CrossFit
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CrossFit is a branded fitness regimen philosophy and a competitive fitness sport, incorporating elements from high-intensity interval training, Olympic weightlifting, plyometrics, powerlifting, gymnastics, girevoy sport, calisthenics, strongman, and other exercises created by Greg Glassman. It is a registered trademark of CrossFit, Inc., which was founded by Glassman and Lauren Jenai in 2000.