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The Advantages of a Curved Non Electric Treadmill Curved treadmills burn more calories since you're required to move the belt with your own energy. They also reduce the strain on joints, making them a good choice for runners and walkers with knee problems. However, they're not ideal for high-intensity sprinting workouts. Researchers have discovered that curved treadmills encourage a narrower strike of the foot, which could cause injuries t
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