With feet shoulder-width apart, position yourself under the center of the barbell in the rack as you place it between your traps and upper back, and grip the barbell wider than shoulder-width apart.
Lift the barbell from the rack by partially standing up and taking a step back while squeezing the bar tightly and keeping it rested over your upper back.
Sit upright on a stability ball with your feet firmly planted on the ground and pointed outward.
Exhale and twist your torso in one direction while keeping it completely upright.
Continue until you cannot do so any longer.
Inhale and rotate back, returning your torso to the starting position.
Switch sides.
After all reps are completed, stand up and return the barbell to the rack.