A Better Abs Workout
If you use an exercise ball for your abdominal workout, here's how to increase the challenge: Keep your eyes closed when you're doing the exercises. With your eyes closed, your muscles will work harder to keep you balanced.
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If you use an exercise ball for your abdominal workout, here's how to increase the challenge: Keep your eyes closed when you're doing the exercises. With your eyes closed, your muscles will work harder to keep you balanced.