CrossFit is a fitness regimen branded and created by Greg Glassman and Lauren Jenai. It is both a competitive fitness sport and a physical exercise philosophy that incorporates Olympic weightlifting, powerlifting, gymnastics, calisthenics, and high-intensity interval training among many other types of workouts. CrossFit has over several thousand gyms affiliated with it and approximately half of them are located in America. Founded in 2000 the first CrossFit gym was opened in Santa Cruz, California, with the first affiliated gym being in Seattle, Washington. By 2005 there were 13 gyms and today there are over 13,000.