The Exercise That Adds Muscle Mass to Your Rear Shoulders
The light dumbbell exercise isolates the back section of your deltoid. This helps add mass to the area and increase your performance on all pulling and pushing exercises, he explains.
See how to do the exercise with three different grips in the video above. Gaddour recommends doing 3 to 5 sets of 10 to 15 repetitions before your upper-body workouts for the next 4 to 6 weeks.