Shoulders · Dumbbell
Dumbbell External Rotation
How to do the dumbbell external rotation, the muscles it works, and the mistakes to avoid. Pulled straight from the Kovo app's exercise library.
- Equipment
- Dumbbell
- Difficulty
- Beginner
- Logged as
- Weighted reps
- Movement
- Rotation
- Mechanic
- Isolation
How to do it
Stand or lie on your side holding a light dumbbell, with your working elbow bent 90 degrees and tucked against your side. Keeping your elbow pinned to your waist, rotate your forearm outward away from your body until you feel a squeeze in the back of your shoulder. Return under control and repeat, then switch arms.
- 1Keep your elbow tucked against your side and rotate your forearm outward
- 2Feel the back of your shoulder and rotator cuff control the motion
- 3Keep your torso still and move only at the shoulder
Common mistakes
- Do not let your elbow drift away from your side
- Avoid using a weight so heavy you have to twist your body
- Do not rush; rotate slowly for control
Muscles worked
The dumbbell external rotation mainly works the external rotators, with the rear delts assisting.
- External RotatorsPrimary
- Rear DeltsSupport
- ForearmsMinor
Kovo programs the dumbbell external rotation for you and tracks it every session.
We build your whole program, drop the right lifts into each workout, and adjust your weights as you get stronger. Free on iOS and Android.
More hips & adductors exercises
- How to do the butterfly stretch
- How to do the external rotation
- How to do the cable hip adduction
- How to do the internal rotation
- How to do the cobra pose
- How to do the core scrunch
Last reviewed June 2026.