Strengthen your arms, upper back, and core with this challenging exercise called up-down plank.
- Come into plank position with your arms and legs straight.
- Beginning with the right side first, lower your elbow to the floor where your hand was. Then lower your left elbow to the floor where your left hand was (now you are in elbow plank, with your forearms parallel).
- Then come back into the starting plank position onto your right hand and then back onto your left. This completes one rep.
- Perform 10 reps starting with your right elbow. Then reverse directions by bringing your left elbow down first for an additional 10 reps.