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.
Elliptical trainers first became available to consumers in the 1990s, but a more compact trainer was invented by Larry Miller in 2004. Most elliptical trainers work both the upper and lower body.
Elliptical machines combine the motion of stair climbers with that of treadmills, and are a popular way to get an aerobic workout indoors. Elliptical trainers provide a low-impact workout.