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Preacher Hammer Dumbbell Curl

The Preacher Hammer Dumbbell Curl primarily targets your Biceps, with support from Forearms. It requires dumbbell and is best suited to beginner lifters.

Beginner level · Equipment: Dumbbell · Isolation · Pull

Primary muscles: Biceps Secondary muscles: Forearms

How to perform Preacher Hammer Dumbbell Curl

  1. Step 1. Place the upper part of both arms on top of the preacher bench as you hold a dumbbell in each hand with the palms facing each other (neutral grip).
  2. Step 2. As you breathe in, slowly lower the dumbbells until your upper arm is extended and the biceps is fully stretched.
  3. Step 3. As you exhale, use the biceps to curl the weight up until your biceps is fully contracted and the dumbbells are at shoulder height.
  4. Step 4. Squeeze the biceps hard for a second at the contracted position and repeat for the recommended amount of repetitions.

Frequently asked questions

What is the primary benefit of the preacher hammer dumbbell curl?

This movement emphasizes the brachialis and brachioradialis while isolating the biceps. The preacher bench prevents momentum, ensuring the target muscles handle the entire load.

How should I position my arms on the bench for proper form?

Align your armpits firmly against the top of the pad and keep your triceps in full contact with the surface. This stabilization prevents shoulder involvement and keeps tension on the elbow flexors.

What is a common mistake to avoid during this exercise?

Avoid cutting the range of motion short at the bottom or allowing the wrists to curl toward the shoulder. Maintain a neutral grip and reach full extension without hyper-extending the elbow.

How can a beginner modify this exercise if a preacher bench is unavailable?

Beginners can perform an incline dumbbell hammer curl or use the back of a weight bench set to a high angle. These alternatives provide similar stability and isolation for the brachialis.

What is the recommended set and rep range for hypertrophy?

Perform 3 to 4 sets of 8 to 12 repetitions using a controlled tempo. Focus on a slow eccentric phase to maximize muscle fiber recruitment and structural adaptation.

Sample sets & reps for Preacher Hammer Dumbbell Curl

  • Form first: 3 sets × 10-12 reps, 60s rest. RPE 6, focus on the target muscle.
  • Hypertrophy: 3 sets × 12-15 reps, 45-60s rest. RPE 7-8, controlled eccentric.
  • Burnout finisher: 2 sets × 15-20 reps, 45s rest. RPE 9, last set to failure.

Pick the scheme that matches your goal. Beginners should start at the lower end of every range; progress weight only when you hit the upper end of the rep range with one or two reps in reserve.

Related Biceps exercises

  • Barbell Curl — barbell
  • Barbell Curls Lying Against An Incline — barbell
  • Brachialis-SMR — stretch
  • Cable Hammer Curls - Rope Attachment — cable
  • Cable Preacher Curl — cable

See all Biceps exercises →

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