Stand upright with your feet shoulder-width apart and your arms fully extended overhead. Wrap a band around a power rack or pole at the level of your hands when extended overhead.
With your arms overhead, grab the band and place one hand clasped over the other.
Exhale and bend at your side while keeping your arms directly overhead, not allowing your arms to assist with the movement.
Continue to bend at your side while maintaining the position of your arms overhead until you are no longer able to do so without rotating your torso.
Inhale and allow your torso to return to the starting position.
After all reps are completed, switch sides and repeat the movement. 10 reps prescribed means you should perform 10 reps on each side (20 total).