The Benefits - This is an overall mass exercise to thicken the upper back. By using a wider hand grib, it will stress more your lower lats. This will  A true bodybuilding exercise to build a serious mass and strength.

Execution - Take a narrow straddled position. Grasp the bar at the shoulder width, overhand grip. With your knees slightly bent, bend forward until your upper body is almost parallel to the floor. Keep your back straight and abdominals tighten and let the bar hang at the arm’s length below the shoulders. Lift the bar upward until it touches your upper abdominal. Squeeze your back muscles and lower the barbbell back to the starting posotion.

Tips - It’s important to feel the stress in the lats without getting help from biceps or legs. Unfortunately, I often see people are using too much weight, so instead they target the upper back, they lift getting help from lower back and legs. Lift the bar toward the abdominals to reduce the stress in your arms. Keep your upper body parallel to the floor all through the exercise. Stand on a block to get more strecth to the back muscles.