When it comes to building impressive arms, the hammer curls muscles workout is a must-have in your routine. Unlike traditional bicep curls, hammer curls train the biceps and target the brachialis and brachioradialis muscles. These muscles add thickness and width to your upper arms, giving you that powerful, well-rounded look. Hammer curls are the best addition to any arm workout routine, whether aiming for strength, aesthetics, or both.
In this article, we will cover what hammer curls muscles workout are, how to do them correctly, the benefits of this workout, and some useful tips to make the most of your training. Let’s get started.
What Are Hammer Curls?
Hammer curls are a variation of the traditional bicep curl that utilize a neutral grip (palms facing each other) instead of the usual supinated (palm-up) grip. This grip change shifts the emphasis from the biceps brachii to the brachialis (a muscle underneath the biceps) and the brachioradialis (a muscle on the forearm). As a result, hammer curls help develop arm thickness and overall strength.
How to Do Hammer Curls Correctly?
Performing hammer curls with proper form is essential to ensure you are targeting the right muscles while minimizing the risk of injury. Follow these steps to get it right:
1. Setup:
- Stand upright with your feet shoulder-width apart.
- Hold a dumbbell in each hand using a neutral grip (palms facing your torso).
- Keep your elbows close to your sides and your posture straight.
Tip: Engage your core and keep your shoulders back to maintain good posture throughout the movement.
2. Curl:

- Without moving your upper arms, curl the dumbbells upward by bending your elbows.
- Keep your palms facing each other as you lift the weights.
- Continue curling until your forearms are almost vertical, and your biceps are fully contracted.
Tip: Squeeze your biceps at the top of the movement to maximize muscle activation.
3. Lower:
- Slowly lower the dumbbells back to the starting position while maintaining control.
- Fully extend your arms at the bottom, keeping tension on your muscles.
Tip: Take about 2-3 seconds to lower the weights to increase time under tension, which promotes muscle growth.
Benefits of Hammer Curl Muscles Workout
Including hammer curls in your arm routine offers several key benefits:
1. Increased Arm Thickness:
The brachialis muscle, which lies underneath the biceps, becomes more prominent when developed, giving your upper arms a thicker, more muscular look.
2. Enhanced Forearm Strength:
The brachioradialis muscle on the forearm is activated during hammer curls, helping you build a stronger grip and more balanced arm development.
3. Balanced Muscle Growth:
While traditional curls primarily target the biceps, hammer curls focus on muscles that are often neglected. This balanced approach reduces the risk of muscular imbalances and potential injuries.
4. Functional Strength Gains:
Hammer curls mimic everyday movements that require a strong grip, making them highly practical for improving functional strength.
Variations of Hammer Curls
To keep your hammer curls muscles workout challenging, try incorporating these variations:
➤ Alternating Hammer Curls:
- Perform the curl with one arm at a time, allowing you to focus on each muscle independently.
- This helps eliminate momentum and ensures proper muscle activation.
➤ Cross-Body Hammer Curls:
- Curl the dumbbell toward your opposite shoulder instead of straight up.
- This variation emphasizes the brachialis and enhances arm width.
➤ Incline Hammer Curls:
- Sit on an incline bench (around 45 degrees) and let your arms hang down.
- This increases the range of motion and targets the lower part of the biceps.
➤ Rope Hammer Curls (Cable):
- Use a rope attachment on a cable machine, performing curls with a neutral grip.
- The cable provides continuous tension, maximizing muscle activation.
Tips for an Effective Hammer Curls Muscles Workout
To make the most out of your hammer curls muscles workout, follow these practical tips:

1. Maintain Good Posture:
Keep your back straight and your shoulders down to avoid straining your lower back. Do not lean backward while curling, as this reduces the effectiveness of the exercise.
2. Focus on Controlled Movements:
Avoid swinging the weights or using momentum. Lift with purpose and lower slowly to maximize muscle tension.
3. Choose the Right Weight:
Start with a weight that allows you to complete 8-12 reps with good form. Gradually increase the weight as you build strength and confidence.
4. Prioritize Quality Over Quantity:
It’s better to perform fewer reps with perfect form than more reps with sloppy technique. Aim for 3-4 sets of 8-12 reps for optimal muscle growth.
Common Mistakes to Avoid
Even the most dedicated lifters can make mistakes that hinder progress. Here are a few to watch out for:
➤ Swinging the Weights:
- Momentum takes the tension off your muscles, reducing effectiveness.
- Always use a controlled, slow motion.
➤ Improper Elbow Position:
- Letting your elbows flare out decreases isolation of the target muscles.
- Keep your elbows close to your sides throughout the movement.
➤ Rushing the Negative Phase:
- Lowering the weights too quickly wastes a crucial part of the exercise.
- Emphasize the eccentric phase by lowering slowly and deliberately.
Sample Hammer Curls Workout Routine
Incorporate this routine into your arm day for balanced muscle development:

- Alternating Hammer Curls: 3 sets of 10-12 reps per arm
- Cross-Body Hammer Curls: 3 sets of 8-10 reps per arm
- Incline Hammer Curls: 3 sets of 10 reps
- Rope Hammer Curls (Cable): 3 sets of 12-15 reps
Rest for 60-90 seconds between sets to keep the muscles under tension while maintaining strength.
Final Thoughts
Hammer curls muscles workout is an essential move if want to build strong, well-defined arms. They target your biceps and also train the often-overlooked brachialis and brachioradialis muscles, giving your arms a thicker and more complete look. Plus, they are great for boosting functional strength and improving grip.
To get the best results, focus on maintaining proper form, using controlled movements, and gradually increasing the weight as your strength improves. Do not be afraid to mix up your routine with different variations to keep challenging your muscles and prevent plateaus.
Consistency is important, so keep pushing yourself and stay committed to your training. With time and effort, you will notice impressive gains and stronger, more powerful arms. Keep lifting, stay focused, and enjoy the progress.