Should I rotate my wrists or keep them neutral?

Rotating your palms upward, known as supination, maximizes bicep activation. While a neutral grip works the forearms more, the rotating motion is standard for targeting the bicep peak.

Is it better to do alternating curls or bilateral curls?

Alternating curls allow you to focus more intensity on each individual arm and reduce lower back strain. Bilateral curls, where both arms move at once, are more time-efficient but may lead to more body compensation.

How heavy should the dumbbells be?

Choose a weight that allows you to complete 8 to 12 repetitions with perfect form. If you find yourself swinging your hips to lift the weight, the dumbbells are too heavy.

How to Do Alternating Dumbbell Bicep Curls

Master the alternating dumbbell bicep curl with our expert guide. Learn proper form, avoid common mistakes, and build stronger arms safely.

How to Perform

Stand upright with your feet shoulder-width apart and a dumbbell in each hand, arms fully extended at your sides.
Position your palms to face your torso and pull your shoulders back to establish a stable starting posture.
Curl one weight toward your shoulder while rotating your palm to face upward as the dumbbell rises.
Squeeze your bicep at the top of the movement for one second, ensuring your elbow stays pinned to your ribcage.
Lower the dumbbell back to the starting position with a slow, controlled motion until your arm is fully straight.
Repeat the same curling motion with the opposite arm to complete one full repetition.
Maintain a braced core throughout the set to prevent your torso from swaying or leaning.

Common Mistakes

Using momentum or swinging the torso to lift the weights
Allowing the elbows to drift forward or away from the body
Failing to fully extend the arm at the bottom of the rep
Dropping the weights quickly instead of controlling the descent

Muscles Worked

Primary movers

Biceps

Stabilizers

Brachialis
Brachioradialis
Forearms

Related Guides

Biceps · Arms