Commercial gym chains are large fitness facilities that operate multiple locations, often across different cities or countries. They provide a variety of exercise equipment, group classes, and personal training services to help members achieve their fitness goals. Popular examples include Planet Fitness, Gold's Gym, and LA Fitness. These gyms typically offer flexible membership options, allowing individuals to choose plans that suit their needs, such as monthly or annual subscriptions. Many commercial gym chains also provide amenities like swimming pools, saunas, and childcare services, making them appealing to a wide range of customers looking for convenient fitness solutions.