Elliptical trainer: general

An elliptical trainer (also cross trainer) is a stationary exercise machine used to simulate walking or running without causing excessive pressure to the joints, hence decreasing the risk of impact injuries.

Elliptical trainers offer a non-impact cardiovascular workout that can vary from light to high intensity based on the resistance preference. Most elliptical trainers work the user's upper and lower body (although some models do not have moving upper body components), although using an elliptical trainer is designed to elevate the heart rate more than building muscles.