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Dumbbell Hammer Curl

Reviewed by Dylan Maurick, Physiotherapist

Targets the biceps and forearms using a neutral grip to build arm strength and size.

Arm exercises
Arms
Dumbbell equipment
Dumbbell
Fatigue level
Low 2/3 High
Dumbbell Hammer Curl
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Dumbbell Hammer Curl

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Muscles Worked: Dumbbell Hammer Curl

The Dumbbell Hammer Curl mainly works your arms, with the biceps driving the curl as you bend your elbow and bring the dumbbells up. Your forearms work hard too because the neutral grip makes them help hold and move the weight through the rep. Curling tasks like this also show measurable changes at the wrist as resistance load changes, highlighting how the forearm stays involved through the rep (Xiao et al., 2019). Focus on feeling your upper arm and forearm work together instead of swinging the weight.

Primary
Biceps
Secondary
Forearms

Technique and form

How to perform the Dumbbell Hammer Curl

  1. Stand upright with feet shoulder-width apart, holding a dumbbell in each hand at your sides with a neutral grip (palms facing your torso).
  2. Maintain a straight back, slightly bent knees, and engage your core to stabilize your spine throughout the movement.
  3. Keeping your upper arms stationary against your sides, exhale and curl the weights upward by flexing at the elbow until the dumbbells reach shoulder height.
  4. Maintain a neutral grip throughout the entire movement, with thumbs pointing upward (like holding a hammer) as you curl.
  5. Pause briefly at the top of the movement, focusing on squeezing your biceps while maintaining proper wrist alignment.
  6. Inhale as you slowly lower the dumbbells back to the starting position with controlled movement, resisting gravity.
  7. Keep your shoulders pulled back and down throughout the exercise, avoiding the tendency to hunch forward as fatigue sets in.
  8. Control the tempo of each repetition, taking approximately 2 seconds to lift and 2-3 seconds to lower the weight.

Important information

  • Keep your elbows fixed at your sides throughout the movement to isolate the biceps properly and prevent shoulder involvement.
  • Maintain a neutral wrist position and avoid excessive flexion or extension that can lead to strain.
  • Ensure you're using a weight that allows you to maintain proper form for all repetitions—if you're swinging your body to lift the weight, it's too heavy.
  • Focus on the quality of each repetition rather than rushing through the set, as the time under tension is critical for muscle development.
Dumbbell Hammer Curl — Step 1
Dumbbell Hammer Curl — Step 2

Is the Dumbbell Hammer Curl good for muscle growth?

Yes. The Dumbbell Hammer Curl is a strong choice for building bigger arms because it lets you train the biceps and forearms together with a simple grip that most lifters can load consistently. Research on bicep curl tasks shows wrist-level force-myography signals increase as resistance load increases, which supports the narrower point that higher loads in curl patterns are associated with greater force-related output at the wrist (Xiao et al., 2019).

  • Neutral grip advantage — Holding the dumbbells with your palms facing each other usually feels easier on the wrists than a fully palms-up curl. That makes hammer curls a useful option if regular curls bother your wrists or elbows.
  • More forearm involvement — Compared with a standard curl, the hammer grip makes your forearms contribute more to holding and moving the dumbbell. That is why many lifters feel this exercise in both the upper arm and the top of the forearm after hard sets.
  • Easy overload with clean reps — Dumbbells make it simple to add small jumps in weight over time. In bicep curl testing, wrist force-myography signals rose as resistance load increased, which supports the narrower idea that load progression changes force-related demand during curl patterns when technique stays consistent (Xiao et al., 2019).
  • Fits well with other curls — Hammer curls pair well with Dumbbell Biceps Curl or Dumbbell Concentration Curl because the grip changes the feel of the rep and spreads stress across the arm a bit differently.

Programming for muscle growth

Do 3-4 sets of 8-12 reps with 60-90 seconds rest. Train them 1-3 times per week after bigger pulling work or near the end of an upper-body session. Use a weight that lets you keep your elbows mostly in place and lower the dumbbells slowly for 2-3 seconds, because the lowering phase gives you more useful tension without needing sloppy cheat reps.

Dumbbell Hammer Curl vs. Other Biceps Exercises

Want to see how the Dumbbell Hammer Curl compares to other biceps moves? These comparisons break down grip, forearm involvement, difficulty, and training goals so you can pick the curl variation that matches your needs.

Dumbbell Hammer Curl vs Dumbbell Biceps Curl

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FAQ - Dumbbell Hammer Curl

What muscles do hammer curls target?

Hammer curls primarily target the brachialis (under the biceps) and brachioradialis (forearm) while still engaging the biceps brachii. This neutral-grip exercise creates balanced development across multiple arm muscle groups, contributing to that coveted three-dimensional arm appearance.

How do I perform a hammer curl with proper form?

Stand with feet shoulder-width apart, holding dumbbells at your sides with palms facing your torso. Keep your upper arms stationary while curling the weights upward until your thumbs are near your shoulders, then lower with control. Maintain a neutral wrist position throughout and avoid swinging your body to assist the movement.

How often should I include hammer curls in my workout routine?

For optimal results, perform hammer curls 1-2 times weekly with at least 48 hours between sessions targeting the same muscle groups. Most lifters see good progress doing 3-4 sets of 8-12 repetitions, adjusting the weight to ensure the last few reps of each set are challenging but doable with proper form.

What are common mistakes to avoid when doing hammer curls?

The most common mistakes include swinging the torso to generate momentum, dropping the elbows forward during the curl, and rushing through the negative (lowering) portion. Also avoid gripping the dumbbells too tightly, as this can cause unnecessary forearm fatigue before your target muscles are adequately worked.

How can I make hammer curls easier or more challenging?

To make them easier, use lighter weights or perform seated hammer curls to reduce the temptation to use momentum. For a greater challenge, try alternating arms, adding a pause at the top of the movement, slowing down the eccentric phase, or progressing to heavier dumbbells while maintaining strict form.

Workouts with Dumbbell Hammer Curl

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Pull Day workouts

Pull day workouts focus on the major muscle groups involved in pulling movements: the back, biceps, and rear shoulders. Training these muscles together helps improve posture, build balanced strength, and develop a well-defined upper body. Compound exercises like rows, pull-ups, and deadlifts create the foundation of your pull day routine by engaging multiple muscles at once. These movements are complemented by isolation exercises such as bicep curls and face pulls to target specific areas and improve muscle detail. Whether you want to increase strength, enhance muscle definition, or support better performance, pull day workouts offer an efficient way to reach your goals.

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Bicep workouts

Bicep workouts target the muscles on the front of your upper arms, helping you develop strength, improve performance in pulling movements, and create well-defined arms. In these workouts, you’ll combine proven compound lifts and isolation exercises to maximize muscle growth and endurance. Exercises like barbell curls, chin-ups, and hammer curls form the foundation of your workouts by engaging the biceps through different angles and grips. These movements are complemented by variations such as concentration curls and cable curls to isolate each arm and enhance shape and detail. Whether you’re training for strength, aesthetics, or overall fitness, dedicated bicep workouts are an essential part of any balanced routine.

Fitness 091

Biceps and Shoulder workouts

Biceps and shoulders are key upper-body muscles that work together in many pulling and pressing movements. In these workouts, you’ll train both areas to improve strength, definition, and symmetry. Compound exercises like overhead presses and chin-ups form the core of your routine, engaging large muscle groups for size and power. These are supported by isolation movements such as lateral raises and hammer curls to refine shape and target specific muscle heads. Whether you're aiming to improve aesthetics, enhance athletic performance, or support better posture and movement, these workouts help you train smarter and grow stronger.

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Muscle Mass workouts

Muscle mass workouts are designed to stimulate hypertrophy: causing your muscles to grow bigger and stronger through progressive overload. These routines focus on moderate to high volume training, combining heavy compound lifts with targeted isolation movements. Whether you're bulking up, increasing strength, or shaping a fuller physique, mass-focused workouts help you train with purpose and efficiency.

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Forearm workouts

Your forearms play a critical role in almost every upper body movement: yet they’re often neglected in training. These workouts focus on building muscular endurance, grip power, and definition in the forearm flexors and extensors. Whether you’re lifting heavy, climbing, or just want stronger hands and wrists, forearm training supports better performance and injury resistance across the board.

Scientific References

Does force myography recorded at the wrist correlate to resistance load levels during bicep curls?

Xiao ZG, Menon C · Journal of biomechanics (2019)

Sources are peer-reviewed academic publications from PubMed.

Content follows our evidence-based methodology
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