The NordicTrack Commercial 1750 Treadmill and iFIT Pro Membership boast technology that puts results within anyone's reach. iFIT tracks your performance and automatically adjusts the 12% incline to -3% decline range, and 0-12 MPH so every workout can be hands-free and personalized ...The NordicTrack Commercial 1750 Treadmill and iFIT Pro Membership boast technology that puts results within anyone's reach. iFIT tracks your performance and automatically adjusts the 12% incline to -3% decline range, and 0-12 MPH so every workout can be hands-free and personalized to you.