Precor EFX 546 Elliptical Version 1 Crosstrainer. Working out on an elliptical can burn as many calories as working out on a treadmill. Yet unlike treadmills, ellipticals are non-impact machines, making them perfect for anyone who has knee problems or is concerned about osteoarthritis. They also offer more variety than treadmills, allowing you to go forward and backward, as well as adjust stride length to target different muscle groups.
The Precor EFX 546 allows you to stride smoothly while holding the handrails or moving your arms in natural sync, with or without hand weights. The electronically adjustable Cross Ramp lets you change the slope of the stride with the touch of a key to vary muscle emphasis.