overview opening hours New and modern 24/7 fitness center in Prague. It offers a wide selection of quality fitness machines, a cardio zone, a spinning studio and a large studio for interesting group lessons (MMA Workout, HIIT, Core, etc.). It is possible to use the terrace for outdoor training as well. Members have 24-hour access to the fitness center. opening hours january—december mon—sun 0:00—0:00 more about opening hours Source: Onegym opening hours january—december mon—sun 0:00—0:00