Safe Exercise, Stress Free: The under desk elliptical exerciser as seen on TV delivers a low-impact, stress-free lower body workout that promotes blood circulation, burns calories, and strengthens leg muscles. Whether sedentary office workers, seniors or leg rehabilitation patients, they can all effortlessly use the elliptical machine for leg adaptation and exercise. Auto & Manual Modes: The elliptical exercise machine has 3 automatic preset modes (P1-P3) and manual modes (HR1-HR12 speed levels), you can freely choose 2 modes based on needs. The pedals can be used forward or backward to change direction and work different muscles, while the massage foot pads provide a more comfortable exercise process.