Forget the floor—this high-efficiency standing workout uses light resistance to target your upper abs, lower abs, and obliques in a fraction of the usual time.

You don't need to lie on the floor or spend hours crunching to carve out a strong, defined core. This standing ab routine sculpts your midsection through dynamic, full-body movement, training your abs ...

Confession: Despite my lengthy career as a fitness journalist and being well-versed in the health benefits of a strong core, I have not been consistent with training my abs for a while. (Hi, holidays ...