If you are looking to burn mega calories and have fun while you are doing it, look no further. Flywheel offers you 45 minutes of a heart "racing" good time! Set to playlists chosen by the instructor, you ride in the dark. You will sweat, you will be sore, and you will want more. Race against others in the class or against yourself every time you go. By the way, your first class is free ... so you be the judge if this is the workout for you.