Dumbbell External Rotation

Muscles worked

Setup

1. Lie on your side on a flat bench or the floor with your legs stacked for stability.
2. Hold a light dumbbell in your top hand, bending your elbow to a 90-degree angle.
3. Place a small rolled-up towel between your elbow and your ribcage to maintain proper alignment.
4. Rest your head on your bottom arm or a pillow to keep your neck in a neutral position.

How to do it

1. Exhale as you slowly rotate your forearm upward toward the ceiling, keeping your elbow pinned firmly against the towel.
2. Rotate as far as your comfortable range of motion allows without letting your shoulder blade roll backward.
3. Inhale as you slowly lower the dumbbell back to the starting position in front of your stomach.
4. Maintain a controlled tempo, taking roughly 2 seconds to lift and 2 seconds to lower.

Form checklist

• Keep your elbow tucked at a strict 90-degree angle throughout the set.
• Avoid shrugging the shoulder toward your ear; keep the shoulder blade retracted and down.
• Ensure the movement comes only from the shoulder joint, not by twisting your torso.
• Keep your wrist straight and firm, avoiding any curling or extension.

Pro tips

• Focus on the mind-muscle connection by imagining the back of your shoulder doing all the work to pivot the arm.
• Use a very light weight; the rotator cuff muscles are small and easily overpowered by larger muscles if the load is too heavy.

Make it harder

• Add a 3-second isometric hold at the peak of the rotation to increase time under tension.
• Perform the exercise on a slight incline to increase the resistance at the beginning of the range of motion.

Frequently asked

What muscles does the dumbbell external rotation work?

The dumbbell external rotation primarily targets the deltoids, lats, and rotator cuff, and also works the biceps and forearms as secondary muscles.

What equipment do you need for the dumbbell external rotation?

The dumbbell external rotation uses dumbbell.

Is the dumbbell external rotation good for beginners?

The dumbbell external rotation is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.

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