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Stand on a resistance-band loop with your right foot and stand with your feet shoulder-width apart. Hold the other end of the loop in your right hand and hinge forward from your hips until your torso is about 45 degrees to the floor. Place your left hand on your left thigh for stability. Drive your right elbow up and back as high as you can, keeping it in close to your side, then slowly lower to the start. Complete all reps on one side, then switch.