The Swiss ball gives some distinct advantages over other pieces of equipment or bodyweight alone. It can extend the range of motion on the crunch, activating more ab muscle. It can also create instability, which forces your abs to contract harder to brace your body, and even serve as a source of resistance itself—like a weight—if you lift it. (Don’t think it’s heavy enough to give you a good workout? Try the V-up and pass on the next page and then tell us.)
HOW IT WORKS
The ball will act as a surface, a weight, and an exercise machine in this workout, recruiting the abs, obliques, and transverse abdominis—a deep core muscle that’s critical to a strong midsection and pain-free back—which most conventional ab workouts leave untouched.
Perform the paired exercises (marked “A” and “B”) as supersets. So you’ll do one set of A and then B before resting. Complete all the prescribed sets for the pair before moving on.
The WORKOUT >>> [PAGE 2]