Stand in a neutral spine position facing your resistance band, which is looped around a solid object at waist height in front of you.
Bring your arms forward and back in an alternating fashion allowing your thoracic spine to rotate but keeping the lumbar spine stable.
Keep your lower back and pelvis still by activating your deep stabilising muscles.
Try to gradually increase the speed of the movement to a pace where you can maintain a stable lower back and pelvis.
Be mindful of the position of your shoulders.
