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:
Sweep plank: We all know that a classic plank will have your abs feeling the burn, but after a while, they can be a bit of a snoozefest. Make the move more dynamic—not to mention, more challenging—by getting your legs involved. This one's a clean sweep (sorry, had to).
(Get more tips that'll light your abs on fire—in a good way—from Women's Health's Look Better Naked DVD.)
