Select your weight. Hook handhold on lever arm of machine. Stand with one side of the body next to the machine and grip handhold with one hand. Straighten up. Place other hand behind head. Bend sideways towards the machine into the starting position.
Move upper body to other side as far as possible. Hold position briefly. Slowly return to starting position. Repeat until a full movement is no longer possible.
Then exercise other side.

Important: Bend sideways and not forwards or backwards. Do not swing to and fro. The pivot point should be above your hips. Your shoulders should be relaxed.