variable-speed belt grinder. Apparently, disused fitness devices make an ideal framework to build your own tools: Strong metal frames, plentiful adjustment guides, and strong treadmill motors.

The patent pending Reaxing Reaxrun (external link) is the world’s very first 3D motion treadmill. Unlike regular treadmills that can only move up or flat, the Reaxrun belt tilts, leans and ...

you should not only have the all-clear from your doctor, but a good idea of how you run. If you tend to get distracted in your footing, look for a treadmill with a wider belt, like the Sole F80.

Wide belts are more comfortable and stable ... A major highlight of the Soozier Under-Desk Treadmill is it’s the only one we’ve seen that comes in an eye-catching pink color.