A Grab a dumbbell in left hand and shift weight onto left leg. Cross right leg behind left and lower into a curtsy lunge, bending both knees (keep most of bodyweight in left leg), hinging slightly forward from hips, reaching dumbbell to the outside of left leg.
B Rise up out of lunge, extending right leg out to side as left leg straightens, rotating torso to the right as left elbow bends to curl the weight across chest. Immediately return to the starting position; repeat. Do all reps on the left, then repeat on the right to complete one set.