The arm handles that go along with the elliptical also target your upper body muscles at the same time ... who are recovering ...

Plyometrics help build power for faster running. Work your quads, glutes, and hamstrings with this short series of movements ...

For example, our elbow joint in the arm has two muscles, to move your forearm up ... and do lots of different things, like running around, jumping up and down, throwing balls, and scoring goals.