Results require consistency and effective workouts. That s what the NordicTrack Commercial 2450 Treadmill and iFIT Pro Membership (sold separately) get you. Together, they create a workout experience unlike any other that keeps you coming back for more. NordicTrack s powerful machine, paired with iFIT s workouts and technology, puts results within anyone s reach. About the Commercial 2450 Treadmill: Sign into your iFIT account directly on the 2450 Treadmill s 24"" Hd touchscreen and your home page will show your next workout in your personalized plan. As you work out, iFIT tracks your performance and automatically changes the 12% incline to -3% decline range, and 0-14 Mph speed range to exactly what you need, so every workout is hands-free and personalized to you. Add your own Bluetooth-enabled heart rate monitor, and iFIT can automatically change your workout intensity to keep you in a target zone with ActivePulse.