This total-body move might be the hardest thing you try this week

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:

Dumbbell piston push pulls: This move is frequently integrated into MetCon and Tabata-style workouts and that's because it's brutally effective. The posture engages your core and quads, while the weight works your arms and back. You'll break a sweat after just a few reps.

(Get more total-body workouts from Women's Health's Look Better Naked DVD.)