1
Stand with feet shoulder-width apart, arms at sides, core engaged, and spine in neutral alignment with shoulders relaxed
2
Raise one arm overhead while maintaining an upright posture and neutral spine position, preparing for lateral flexion movement
3
Slowly laterally flex the torso by bending sideways away from the raised arm, allowing the abdominal muscles to lengthen on the working side while keeping the hips stable and level
4
Return to the starting upright position by contracting the abdominal muscles and bringing the torso back to neutral, then repeat on the opposite side