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Arnold Press

A rotating dumbbell press that hits all three deltoid heads through an extended range of motion.

Setup

Start with dumbbells at shoulder height, palms facing you. Elbows down and in front of your body, like the top of a bicep curl.

Movement

Press up while rotating your palms forward. As you push the dumbbells overhead, rotate your wrists so your palms face away from you by the top of the press. Lock out at the top. Arms extended, palms forward, dumbbells roughly in line with your ears.

Return

Reverse the rotation on the way down. Lower while rotating your palms back to face you, arriving back at the starting position with control.

Common Mistake to Avoid

Rushing the rotation. The rotation is the entire point of this exercise — moving through it too fast turns it into a regular press and loses the extra range of motion benefit.

Equipment Dumbbells, bench (optional)
Primary Muscles Shoulders (all three deltoid heads)
Secondary Muscles Triceps, upper chest

Why it matters

The rotation built into the Arnold press — starting with palms facing you and finishing with palms facing forward — takes the shoulder through a longer range of motion than a standard press, engaging the front and side deltoids more completely along the way.

It's a good complement to a standard overhead press specifically because of that extra rotational component, which a straight vertical press doesn't include.

How to do it

  1. Start with dumbbells at shoulder height, palms facing you. Elbows down and in front of your body, like the top of a bicep curl.
  2. Press up while rotating your palms forward. As you push the dumbbells overhead, rotate your wrists so your palms face away from you by the top of the press.
  3. Lock out at the top. Arms extended, palms forward, dumbbells roughly in line with your ears.
  4. Reverse the rotation on the way down. Lower while rotating your palms back to face you, arriving back at the starting position with control.

Common mistakes

  • Rushing the rotation. The rotation is the entire point of this exercise — moving through it too fast turns it into a regular press and loses the extra range of motion benefit.
  • Using too much weight to manage the rotation safely. Because of the more complex movement path, this exercise typically requires lighter weight than a standard press — respect that.
  • Letting the elbows flare too wide at the bottom. Keep the starting position compact, elbows in front of the body rather than out to the sides.
  • Arching the back to finish the press. Like the standard overhead press, a braced core prevents compensating with the lower back.

Sets & reps by level

Beginner

3 sets of 8–10 reps with light dumbbells, prioritizing the full rotation over speed or weight.

Intermediate

3–4 sets of 8–10 reps at a moderate, controlled weight.

Advanced

4 sets of 6–8 reps, often used as a primary shoulder press variation rather than an accessory movement.

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