Gym chains are networks of fitness centers that operate under a common brand and business model. They offer a variety of exercise equipment, classes, and amenities to help members achieve their fitness goals. Popular examples of gym chains include Planet Fitness, Gold's Gym, and LA Fitness. These facilities often provide flexible membership options, allowing individuals to choose plans that suit their needs. Many gym chains focus on affordability and accessibility, making fitness available to a broader audience. They typically have multiple locations, which allows members to work out at different sites. Additionally, gym chains often promote a sense of community through group classes and events, encouraging social interaction among members.