Sit Ups with Medicine Ball

Grab a ten-pound medicine ball or higher and hold it with your arms straight. Lie down with bent knees and do four sets of ten abdominal crunches or sit-ups. Keep your chin facing the ceiling and your spine aligned. When you rise, exhale and bring your arms out holding the ball toward your knees. When you sit back down, inhale and bring your arms to starting position, with the medicine ball resting over your tummy. Do not go all the way back to the floor. Rather, rise back up again after you are one to two inches from the floor.

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