A treadmill is a stationary exercise machine that features a walking or running belt designed for indoor cardio exercise. Many treadmills offer a range of speed and incline settings, making them accessible pieces of fitness equipment for individuals at any cardio fitness level.Treadmills have been used as exercise machines for running or walking in one place, the device provides a moving platform with a wide conveyor belt driven by an electric motor or a flywheel. The belt moves to the rear, requiring the user to walk or run at a speed matching the belt. The rate at which the belt moves is the rate of walking or running. Thus, the speed of running may be controlled and measured. The more expensive, heavy-duty versions are motor-driven (usually by an electric motor). The simpler, lighter, and less expensive versions passively resist the motion, moving only when walkers push the belt with their feet. The latter are known as manual treadmills. I decided to design a treadmill meant to be powered by an electric motor because it allows for more variety in speed.