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Manual Treadmill Without Electricity Manual treadmills without electricity are the latest eco-friendly evolution of a traditional gym staple. You can use them anywhere since they don't need electricity. However, Lindsay noticed that the bent belt and deck felt unstable when she ran on it. The monitor's built-in timer programs aren't compatible with walking and jogging. Traditional manual treadmills The traditional manual treadmills run entirely by the user, because there is no