Lie on your side with your upper body propped on a straight arm and a weight on the floor next to your hand.
Lift your hips up so that your body is in a straight line, supported on your hand and feet.
While maintaining this position, rotate your trunk so that you first pass your uppermost hand under your body and pick up the weight from the floor.
Then lift the weight up to a straight arm to point towards the ceiling.
Alternate rotating your trunk, bringing the weight under your body, and lifting it up towards the ceiling.
