30 Minute Own Body Weight Tabata Workout. Body-weight workouts are the best because you can pretty much do them anywhere. Your living room, hotel rooms, the beach, your backyard, a gym…they go where you go. CLICK on the image for more details!
Target: The serratus anterior Why it works: Put your hands on the sides of your rib cage at your bra strap. You're feeling these small, hardworkin' muscles. When they're strong, they act like little arrows pointing to defined abs. "The serratus highlights or accents the ribs, making the whole torso appear more defined," says trainer James Bowman, owner of Northwest Strength Lab on Bainbridge Island, Washington.