Why it's perfect for you: These moves blast bra bulge, tightening up the area around your underarm without—and this is key—creating width or bulk. Grab the bar at a lat pulldown machine with hands ...

Your latissimus dorsi muscle, or “lats,” is the widest muscle in the human body. The lats are a large, triangular-shaped ...

Adjust the machine’s knee pad so that you can sit with your feet on the ground. Grasp the bar with an underhand grip. Your hands should be shoulder-distance apart directly above your shoulders (A).