Let's say you're doing a treadmill exercise. You know, the kind where you occasionally change the speed and incline. Do you really need a video of someone telling you "it's time to go faster?" Nah. Aaptiv packs great audio–only classes for all those workouts that just don't make sense for video. Smart design, great music, and a huge library of classes make even the most hardcore exercises enjoyableUnlimited access to thousands of workoutsMore than 30 new classes every week - in popular categories...