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.
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.