The NordicTrack X16 Elliptical and the iFIT Pro Membership boast technology that puts results within anyone s reach. iFIT tracks your performance and automatically changes your 10% incline to -10% decline range, and 26 resistance levels to exactly what you need, so every workout is personalized to you. The 3-in-1 design mimics the movement of a stepper, elliptical, and treadmill, so you can choose how you want to workout. The X16 Elliptical is designed to deliver a long range of motion with lower impact. iFIT is the world s largest outdoor workout library, featuring over 10,000 workouts led by professional athletes and trainers. With iFIT, this elliptical is more than just an elliptical. It becomes an effective personal training tool for real results.