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Electric Motorized Treadmill Unlike non-motorized curved treadmills, which rely on internal flywheels to get going the electric treadmills feature motors that switch between speeds and incline at the press of an button. They can also be used for interval training. You can avoid a spike in your electric bill by selecting treadmills that is efficient to the maximum. They consume less energy. Noise A motorized treadmill is one that makes use of electricity to move an entire belt at a constant pace