A

> Hold a 3- to 5-pound dumbbell in each hand and stand on a balance board with feet hip-width apart. > Raise right arm to shoulder height in front of you and bend elbow so forearm is perpendicular to the floor, palm facing left. Extend left arm at side, palm facing thigh.

B

> Straighten right arm, pressing the weight overhead, as you raise left arm forward to chest height. Return to starting position; repeat. Do 5 reps, then switch sides to complete set.