Some call this move the flashlight, and we love it for the intense focus on the abs. Straighten your arms to increase the difficulty. Once you master the move, try speeding up. Stand with your knees slightly soft, holding a dumbbell at chest level. Keep your pelvis stable as you rotate your ribcage right and left, to complete one rep. Be sure to keep your abs pulled toward your spine as you twist from side to side. Do three sets of 30 reps each. Source: POPSUGAR Studios
10-Minute Workout to Tighten the Arm Jiggle: Get the gorgeous chiseled arms you've always dreamed of with this simple 10-minute toning workout. All you need is a set of dumbbells, and you're ready to get to work.