Elliptical machines and treadmills are aerobic exercises, which exercise the whole body muscles. The exercise intensity of elliptical machine is small, mainly to exercise the coordination of human body, stretch body muscles, and do little harm to knees. Treadmill is the first choice for full-body exercise, weight loss and heart and lung function because of its strong exercise intensity, which is harmful to knees, so pay attention to posture and running shoes. You can choose according to your own exercise needs. Try it in the store.