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 ...

Whether you like it or not, you’ll probably wind up spending some quality time with a treadmill this winter. Why not reduce the dread by doing it in the comfort of your own home? With its incline and ...