Mountainside Fitness Center has various locations in Arizona, including Mesa, and offers health and fitness programs. The center was established in 1991 and is a member of the Fitness Network of Arizona. It is a locally owned health club that offers various personal training programs with the help of professional trainers, such as weight loss, body building, and flexibility and nutrition programs. Additionally, the center also offers fitness programs for children and senior adults. It provides specific training for sporting activities, cardiovascular exercises and resistance training. Mountainside Fitness has a pro shop that stocks men s and women s apparel and accessories. Additionally, it offers a corporate membership program that provides health and wellness services for employees of various organizations, such as Phoenix Suns and Mayo Clinic. Mountainside Fitness is a subsidiary of Hatten Holdings and has a location in Westminster, Colo.