Want to work your legs and butt but don't have any weights? Find a step, box, bench, or sturdy chair and learn how to do a step-up. The step-up exercise combines the mechanics of a lunge with upward ...

This week's workout comes from a trainer at New York Sports Club. Utilizing a box for a step-up is a great way to engage your core and work your lower body. Why not try to elevate that move by ...