
Interestingly the fix for this back strain is yet another exercise. You have to strengthen the rhomboids muscles, or the middle back. These muscles pull your shoulder blades back. There is one excellent work out maneuver for this, called the “bat wing”. It starts like a row, but it continues for an increased range of motion. By working your muscles further, your rhomboids take up the slack. Build up this muscle for better shoulder definition and a healthier back.
Watch the demonstration on how this exercise is done, from Men’s Health: The Perfect Shoulder Workout.
Source: Mens Health