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https://en.wikipedia.org/wiki/CrossFit
CrossFit is a branded fitness regimen created by Greg Glassman and is a registered trademark of CrossFit, Inc. which was founded by Greg Glassman and Lauren Jenai in 2000. Promoted as both a physical exercise philosophy and also as a competitive fitness sport, CrossFit workouts incorporate elements from high-intensity interval training, Olympic weightlifting, plyometrics, powerlifting, gymnastics, girevoy sport, calisthenics, strongman, and other exercises. It is practiced by members of over 13,000 affiliated gyms, roughly half of which are located in the United States, and by individuals who complete daily workouts (otherwise known as "WODs" or "workouts of the day").