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How Does a Non Electric Treadmill Work? A manual treadmill can also be known as a self-propelled or flat-bed treadmill. It uses your body weight to move the belt. It doesn't require an electrical outlet and is easy to store. Research has shown that using a treadmill without motors is more like running outdoors. This is particularly true for HIIT-style training. It includes a waist belt that is curved The manual treadmill that is curved is not powered by a motor and therefore doesn't require