A health club, also called fitness studio, exercise center or fitness center, is a place which houses exercise equipment for the purpose of physical exercise. There exist specific health clubs that specialize in catering for female exercisers and do not allow any male patrons on the premises. These type of health clubs are often termed ladies-only health clubs. In order to cater for these types of exercisers, many unisex health clubs offer a ladies-only workout area or room, inside which no male patrons are allowed. Health clubs offer a collective and often entertaining and informal form of working out and/or bodybuilding beyond the structure of the classic gym.