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Types of Treadmills - Electric and Non Electric Running on a treadmill can increase the physical load of your workout without requiring an electrical outlet. If you want to increase your gains from training but want to go beyond the standard treadmills with motors. Manual treadmills, also known as self-propelled treadmills, or non-motorized machines make use of your body weight and effort to move the belt. These machines typically have a slight slope and a curve to assist in getting the belt