You don't need to do thousands of sit-ups or spend hours in the gym to build abs. You can instead do the bare minimum of two to three ab-focused exercises for 20 to 30 minutes a week. Exercises like ...

Abs exercises tend to be tedious—a necessary evil of staying fit. We found a way to bake it right into your regular workout. There’s a better way. You can actually tweak moves you’re already doing, ...