double hand hammer curls

"Double Hand Hammer Curls: Perfect Your Grip & Build Strength"

By Joshua MooreDecember 30, 2025

Looking to add some serious strength and size to your biceps? The double hand hammer curl is an exercise that's been a staple in gyms and workout routines for decades, and for good reason. This compound movement not only targets your biceps but also engages your forearms, making it an excellent choice for a comprehensive upper arm workout. Let's dive into the details of this powerful exercise, its benefits, proper form, and common mistakes to avoid.

What are Double Hand Hammer Curls?

Double hand hammer curls, also known as hammer curls, are a weightlifting exercise that primarily targets the biceps brachii, with secondary engagement of the brachialis, brachioradialis, and forearms. The exercise is called a 'hammer' curl because the dumbbells are held with a neutral grip, similar to holding a hammer, as opposed to the underhand grip used in regular bicep curls.

Benefits of Double Hand Hammer Curls

Bicep and Forearm Development: Hammer curls are an excellent exercise for building both bicep and forearm size and strength.
Prevents Muscle Imbalances: By working the biceps from a neutral grip, hammer curls help prevent muscle imbalances that can occur from always training with a standard underhand grip.
Grip Strength: The neutral grip used in hammer curls also helps improve grip strength, which is beneficial for many other exercises and daily activities.
Functional Strength: The movement pattern used in hammer curls is similar to many everyday activities, making them a practical exercise for building functional strength.

How to Perform Double Hand Hammer Curls

Here's a step-by-step guide to performing double hand hammer curls with proper form:

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a woman holding two dumbs while standing next to each other

Starting Position

Stand tall with your feet shoulder-width apart, maintaining a slight bend in your knees.
Hold a dumbbell in each hand with a neutral grip (palms facing each other), arms extended, and dumbbells resting against your thighs.

Movement

Keeping your elbows close to your torso, initiate the movement by flexing your biceps and curling the dumbbells towards your shoulders.
Continue the movement until the dumbbells reach shoulder level, maintaining a neutral grip throughout.
Squeeze your biceps at the top of the movement, then slowly lower the dumbbells back to the starting position, maintaining control throughout the eccentric phase.

Tips

Keep your elbows stationary and close to your torso to minimize cheating and maximize bicep engagement.
Use a weight that allows you to complete the desired number of reps with proper form. If you can't complete the last few reps with good form, reduce the weight.
Focus on a slow, controlled movement, both on the way up and down. This helps to engage your muscles more effectively and reduces the risk of injury.

Common Mistakes to Avoid

Mistake	Correction
Swinging or using momentum to lift the dumbbells	Focus on a slow, controlled movement, keeping your elbows stationary and close to your torso.
Lifting the dumbbells too high, beyond shoulder level	Stop the movement when the dumbbells reach shoulder level to avoid straining your joints and reducing the effectiveness of the exercise.
Using too heavy a weight, leading to poor form	Choose a weight that allows you to complete the desired number of reps with proper form. It's better to use a lighter weight and maintain good form than to use a heavier weight and compromise your technique.

Incorporating Double Hand Hammer Curls into Your Workout

Double hand hammer curls can be incorporated into various workout routines, depending on your fitness goals. Here are a few ideas:

Bicep Isolation: Perform hammer curls as a standalone exercise for bicep isolation, focusing on high reps and low weight for hypertrophy or low reps and heavy weight for strength.
Arm Day: Include hammer curls as part of an arm workout, pairing them with other exercises like tricep extensions, overhead press, and lateral raises for a comprehensive upper arm workout.
Full-Body Workout: Add hammer curls to a full-body workout, performing them after exercises that target larger muscle groups like squats, deadlifts, or bench press. This helps to ensure that your arms are properly warmed up and engaged throughout the workout.

In conclusion, double hand hammer curls are an excellent exercise for building bicep and forearm size and strength, as well as improving grip strength and functional strength. By incorporating this exercise into your workout routine with proper form and technique, you can reap the benefits of this powerful movement. So, grab a pair of dumbbells and start curling your way to stronger, more defined arms!