If you desire an all in one treadmill, then the Proform Crosswalk 425 Treadmill is what you are after. With the Proform Crosswalk 425 Treadmill, you will not only be able to burn up to 350 calories, but you will be shaping the muscles of your arms, back, and shoulders for a complete workout. The Proform Crosswalk 425 Treadmill is one of the best complete workouts you can receive while protecting your joints with the ProSoft Plus. This ground-breaking cushioning reduces impact up to 22 percent. The Proform Crosswalk 425 Treadmill offers many wonderful features such as QuickSpeed control, a Mach drive motor, two CrossWalk Calorie workouts, and a built-in heart rate monitor. The Proform Crosswalk 425 Treadmill also has a three year warrant on the motor.