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Summary: Crunches with medicine balls can tone and build core muscles. Learn medicine ball exercises for strength training and conditioning in this free fitness video.
Sue Conrad is a personal trainer with a certification through the American Council on Exercise (ACE) since 2001. She currently teaches cardio kickboxing, and she trains clients of...read more
"Okay our next clip is going to be medicine ball crunches. Okay we're going to get down carefully onto your mat. Okay you're going to roll down slowly. Take your ball overhead. Bend your knees slightly with your feet flat on the floor and arms overhead. You're going to bring your body up towards your knees, extend the arms. I would stop right at the top of the kneecaps. Then take it back down nice and slow. Of course you're going to exhale on the way up. Try and keep your body angled so your back is protected. Now remember this is also going to be working your shoulder muscles so if you have shoulder issues you may want to go with a lighter ball. This is an eight pound ball. Another option if you have shoulder issues, you can take the ball and start from the center of the body and then just lift. It's not quite as challenging for the shoulders but you're still going to feel it in the abdominals. This is more challenging. Extend. Elbows slightly bent."
eHow Article: Medicine Ball Crunches