The number of CrossFit-affiliated gyms grew quickly: there were 13 gyms in 2005, 8,000 in 2013, and more than 13,000 in 2016. Coaches associated with CrossFit include Louie Simmons, John Welbourn, and Bob Harper. Glassman then began to develop a curriculum to train and certify coaches and gym owners using his methodology. The first affiliated gym (known as 'box') to form was CrossFit North in Seattle, Washington when Glassman's internet postings were used by those who wanted to officially incorporate his workouts into their training regimen in 2002. They opened a gym in Santa Cruz, California in 2001 and posted their workouts on the Internet for their clients, and these workouts were then quickly adopted by individuals in the police, military, firefighting services.
Greg Glassman and Lauren Jenai incorporated CrossFit, Inc. ĬrossFit, meaning cross-discipline fitness, was conceived as a company in 1996 as Cross-Fit. There are also concerns that its methodology may cause exertional rhabdomyolysis, a possible life-threatening breakdown of muscle from extreme exertion. ĬrossFit has been criticized for causing more injuries than other sporting activities such as traditional weightlifting however, an article in the Journal of Sports Rehabilitation found that "the risk of injury from participation in CrossFit is comparable to or lower than some common forms of exercise or strength training".
It is practiced by members in CrossFit-affiliated gyms, and by individuals who complete daily workouts (otherwise known as "WODs" or "Workouts of the Day"). ĬrossFit is promoted as both a physical exercise philosophy and a competitive fitness sport, incorporating elements from high-intensity interval training, Olympic weightlifting, plyometrics, powerlifting, gymnastics, kettlebell lifting, calisthenics, strongman, and other exercises. The company forms what has been described as the biggest fitness chain in the world, with around 12,000 affiliated gyms in over 150 countries as of 2022, under half of which are located in the United States. The method was developed by Greg Glassman, who founded CrossFit with Lauren Jenai in 2000, with CrossFit its registered trademark. CrossFit is a branded fitness regimen that involves constantly varied functional movements performed at high intensity.
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