Established in 1965, Gold's Gym is one of the largest full-service gym chains in the world. The gym has more than 700 locations in 42 states and 30 countries. Gold's Gym offers the latest equipment and services, including group exercise, personal training, cardiovascular equipment, group cycle, Pilates and yoga. Located in Mesa, Ariz., the gym provides a variety of products, such as reps, climber, leg lifts and anti-pasta. Gold's Gym has affiliation with the American Diabetes Association.