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Dumbbell · Shoulders

Arnold Press: A Rotating Shoulder Press for Full Deltoid Coverage

Adding a rotation to a standard shoulder press hits all three heads of the deltoid through a longer path.

· 2 min read

Arnold Press demonstration

The Arnold press takes a standard dumbbell shoulder press and adds a rotation at the bottom, trading some of the weight you can handle for a longer range that works more of the shoulder.

How to do it

  1. 1Start with palms facing you — dumbbells at shoulder height, elbows in front of your body, like the top of a curl.
  2. 2Rotate as you press — turn your palms to face forward as you drive the dumbbells overhead.
  3. 3Extend fully at the top — arms straight, dumbbells over your shoulders, without shrugging.
  4. 4Reverse the rotation on the way down — turn your palms back to face you as you lower, retracing the same path.
  5. 5Return to the start — dumbbells back at shoulder height, palms facing you, ready for the next rep.

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Sets and reps

3 sets of 8–12 reps — the rotation adds a coordination demand, so start with lighter weight than you'd use for a standard shoulder press until the movement feels smooth.

Common mistakes

  • Rushing the rotation. Turning the wrists too fast or too late throws off the bar path and reduces how much of the shoulder actually works through the rotation.
  • Arching the lower back. Leaning back to help press the weight overhead shifts load to your spine. Keep your core braced and ribs down.
  • Skipping the full rotation. Only partially rotating the palms turns this back into a regular shoulder press and loses the exercise's main benefit.

Safety note

Master a standard dumbbell shoulder press first — this variation adds real coordination demands and is easier to learn once the pressing pattern itself is second nature.

The rotation is what makes this exercise worth doing over a standard press. Slow it down until it feels controlled, not just doable.

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