How Effective are Elliptical Trainers?: An elliptical trainer is really a cross between a treadmill and a stair climber allowing you to efficiently get the best of both worlds in one machine. [by Tim Gorman]
Get in Shape with an Elliptical Trainer: How they work
Benefits Of Elliptical Machines: Why are elliptical machines popular? What do users get from them? There are many benefits that can be enjoyed by using an elliptical machine.