Step by step instructions
Stand with feet wider than hip width, holding dumbbell. Bend elbows and raise dumbbell to right shoulder (as if winding up to hit a baseball with a bat), rotating torso to the right, lifting left heel off the floor in preparation for the chop.
Engage abs and quickly lower dumbbell down and across to left knee, rotating torso to the left and lifting right heel to lower into a left lunge. Immediately return to start. Do 12 reps; repeat on opposite side.