Position back against back pad with knees slightly bent, shoulders back, and chest high. Place both cable straps over shoulders, one in each hand. Place hands with cable strap in front of each shoulder so that cable is taut. If available, place hands in strap slots that allow cable to be taut when hands are in position with shoulders back.
Flex and twist spine so torso pulls strap forward and downward while twisting one shoulder to forward center. Return until back of shoulders return to back pad. Repeat alternating twists with opposite sides.
To allow for full range of motion, grip height on strap should not allow weight to bottom out (weights touching stack) when shoulders are back. Padded hump should be adjusted to height of low back. See Spot Reduction Myth.