Great-looking abs are more than just a way to support the mirror industry. In fact, strong abs and flat stomachs are the ultimate indicator of overall health-for both men and women. Great abs will help you live longer, sleep better, prevent back pain, and significantly improve your sex life! (And, hey, they don’t look half-bad in the mirror, either.) Unfortunately, you could spend years on starvation diets and extreme exercise programs that never unearth those elusive stomach muscles.
Or you could spend just…
