Lying Dumbbell Rear External Rotation What muscles do Lying Dumbbell Rear External Rotations work? The Lying Dumbbell Rear External Rotation is an isolation exercise that primary targets your shoulders. It’s a strength exercise that uses pull force. How to do the Lying Dumbbell Rear External Rotation Benefits of the Lying Dumbbell Rear External Rotation Tips for performing the Lying Dumbbell Rear External Rotation What equipment is needed to perform Lying Dumbbell Rear External Rotations? What type of exercise is the Lying Dumbbell Rear External Rotation? How many reps you should do for Lying Dumbbell Rear External Rotation?