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The Benefits of a Foldable Non Electric Treadmill If you're looking to invest in a non-folding treadmill, you'll likely benefit from more stable, long-lasting workout. They are also more likely to have a larger capacity for weight than folding models. Lindsay tried the Woodway Curve 3.0, the curved manual treadmill that encourages proper running technique and increases energy expenditure. It also has a receptive surface that can be used with either cleats or