What are some good oblique exercises that can be done with an exercise ball?!

Question: pretend that your doing a regular sit up but put your knees to the side.
rest your feet at the top of the ball, and lay out rest on you elbow, and dip down, don't rest but your waist should hit the ground.

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Answers: pretend that your doing a regular sit up but put your knees to the side.
rest your feet at the top of the ball, and lay out rest on you elbow, and dip down, don't rest but your waist should hit the ground.

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