Join us on "The Ab Series" as we help you shape your best six-pack or simply flatten your stomach. The focus today is a great exercise to tighten the abs with only one inexpensive piece of equipment, an exercise ball.
Instruction: Lie on a stability ball so that your mid and lower back are supported, with knees bent and feet firmly planted on the floor slightly wider than shoulder width apart. Contract your abdominals and come up into a crunch, then return to start. Avoid resting on ball between repetitions. Ball crunches are excellent for people who have lower back issues and can be performed in a high rep range, between 30 to 100 reps per set. Perform 4 to 6 sets of this exercise, resting 30 to 60 seconds between sets.
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