Circuit Training for Every Body. Fitness Circuit is a video game that allows you to get exercise into your daily routine at home without a need for workout equipment. Using the workout method called Super Circuit Training, you are able to have aerobic and strength-building exercises to efficiently burn calories, increase endurance, and improve muscle strength in a short period of time. The game is recommended for those who are looking to stay active, have casual workouts at home, shape up, boost stamina, and reduce stress.