Elliptical trainers offer the same benefits as a treadmill but are low impact machines. i.e.. your feet stay stationary. These machines have adjustable resistance; sophisticated digital displays and are quiet in operation. Ellipticals use a flywheel and have a roughly circular motion (ellipse) that takes a little getting used to. Some models offer reverse motion as well as forward. The better machines have a fluid. natural motion and also exercise the arms and upper body.

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