The LightSpeed Lift is a patented, FDA-approved Anti-Gravity System developed for physical rehabilitation and athletic training. The LightSpeed is designed to work with existing treadmills and allows for a controlled body weight lift of up to 65 lbs. With the use of custom shorts or a lift-belt attachment device walking or running become easier, enjoyable and safe. LightSpeed Lift reduces impact force, encourages better form and increased speed.