Watch Chris Freytag show the steps to performing a medicine ball Russian twist:

1) Begin in a seated position with knees bent, feet off the floor and holding medicine ball in front of chest a few inches.

2) Twist the ball to your left hip bone, keeping body centered.

3) Twist the ball to your right hip bone, keeping body centered.

4) This is one repetition. Continue to twist back and forth for desired number of repetitions or length of time.

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