The typical side-lying dumbbell external rotation overloads the middle of the range. If you use a resistance tube, it overloads the end range. Well, there’s a way to overload the start range. I learned it from shoulder specialist Dr. Dale Buchberger, and thus I coined it the “Buchberger External Rotation.” Simply lean back while performing a side-lying dumbbell external rotation. Now a greater overload occurs in the bottom (or start) of the range. By inserting this movement periodically into your training, it will promote even strength development throughout the entire range of motion.