Weighted Leg Raises
Starting Position: Lie on your back, with your hands at your side or just under your buttocks. Place a light dumbbell between your ankles. Form: Keeping your knees slightly bent, lift your legs straight in the air. Keep your back flat against the floor throughout the movement, especially as you lower your legs. Keep tension on your abs by not lowering all the way to the floor. Personal Trainer Tips: The lower you extend your legs the more challenging this exercise is for the ab muscles and lower back.