Elliptical trainers provide a low-impact full-body cardiovascular workout. They are a popular choice for an indoor aerobic workout, but without the impact of jogging on a treadmill or pedaling a stair stepper.
An elliptical trainer (also called a cross-trainer) is a stationary machine used to simulate the exercise benefits of climbing stairs, walking, and running. The stationary nature of the machine causes less pressure on joints.
Some claim that the dual action (exercising both upper and lower body) of the elliptical trainer is more efficient in burning calories. This is because, by exercising more muscle groups simultaneously, an intense workout can be achieved in a short time.