CrossFit, Inc. is a fitness company 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 10,000 affiliated gyms, half of which are located in the United States, and by individuals who complete daily workouts posted on the company's website.