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How Does a Non Electric Treadmill Work? A manual treadmill is 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 simple to store. Studies have proven that running on a treadmill with motors more similar to running outdoors. This is particularly applicable to HIIT-style training. It features a waist belt with a curvature A manual treadmill that is curved isn't powered by a motor