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Getting Your Feet Wet With a Non Electric Treadmill Consider the NordicTrack Commercial X22i If you're interested in trying out a non-motorized model. This hybrid model has both an electric motor as well as a manual option. Flat manual treadmills promote correct running technique by requiring you to place your feet precisely beneath your hips and engage the correct muscles. They are also more responsive to speed changes and therefore are ideal for HIIT exercises. Manual Treadmills Manual treadmills are powered by your own muscles making them an ideal
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