Plus: Want to go fast or simulate the feeling of climbing a mountain? The X9i is for you. One-touch buttons let you quickly adjust belt speed (0 to 12 mph) and tilt (-6 up to an extremely steep 40 ...

If you want to kick things up a notch, Miller suggests increasing the incline and/or your speed. You can check in with ...

Which incline treadmill is best? Treadmills are among the most popular exercise machines for home or gym use. Using them with an incline lets you increase the intensity of the workout and target the ...