Combine cardio with core work to reap the flat-belly benefits of both types of sweat sessions in this Better-Body Challenge. This workout alternates between jumping rope and standing ab exercise, so you can tone your belly while burning serious calories i
Skip the Crunches: 7 Ways to Work Your Abs Standing -You can tone your abs without ever doing do a crunch again. And the good news gets even better! Standing ab exercises tone your middle while working your entire body, increasing your caloric burn.