Start in a half kneeling position beside a wall, the trailing leg near the wall
Hold a resistance band in your hands and raise your arms to have them in front of you parallel to the floor
Keeping the nearest arm in contact with the wall rotate and open your chest with the other arm against the resistance until it touches the wall on the other side
Slowly return to the starting position resisting the band pull
Form tips
Follow your hand with your gaze to ensure thoracic rotation.