Health and fitness clubs provide their customers with the infrastructure for their workouts and physical activity in exchange for a membership fee. The global fitness and health club industry generates more than 80 billion U.S. dollars in revenue per year. The North American market had an estimated size of more than 32 billion U.S. dollars in 2017, of which around 90 percent, around 30 billion U.S. dollars, was attributable to the United States. The United States is the single biggest market worldwide not only in terms of revenue but in regards to the number of members in health & fitness clubs as well.