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The Advantages of a Curved Non Electric Treadmill Curved treadmills burn more calories since you have to propel the belt with your own energy. They lessen the strain on joints and therefore are a great option for walkers or runners who have knee problems. They're not ideal for intense exercises. Research shows that curved treadmills can lead to a narrower foot strike, which can lead to injuries to the calves and hamstrings. Eco-friendly There are numerous options when you're looking for a su