We Dare You to Try This Super-Intense Core Exercise

Check out Women’s Health’s FitGIF Friday every week for fun and challenging new moves to make your sweat sesh really count. Here’s this week’s exercise:

Plank jack: You know performing planks is one of the best ways to light up those abs. But let us introduce you to the plank’s sassy sister: the plank jack. This exercise packs some serious attitude and abs-sculpting power. Crank these out for a stronger six pack—stat. (Work even more towards your abs #goals with these moves from the Women’s Health Look Better Naked DVD).