Dumbbell Alternate Bicep Curl

Dumbbell Alternate Bicep Curl is a resistance exercise – elbow flexion exercise involving Biceps brachii, Brachialis. Use these steps to learn the movement and work with your coach to choose a suitable level.

Last updated: 2026-10-31 · DynPerformance

Primary muscles: Biceps brachii, Brachialis
Secondary muscles: Brachioradialis, Forearm flexors, Anterior deltoid (stabilization)
Exercise type: Resistance exercise – elbow flexion

Exercise technique

Dumbbells
Hold both weights at your sides with a neutral grip.
Torso
Plant your feet and position your upper arms beside your torso.
First arm
Begin bending one elbow, rotating your palm upward as you lift.
Top contraction
Pause briefly as the dumbbell approaches your shoulder without moving your upper arm forward.
Descent
Slowly extend your forearm and rotate your hand back to the neutral start.
Opposite arm
Once the first dumbbell settles at the bottom, curl with the other arm.
Sequence
Alternate with equal range and lowering time on both sides.

Key technique points

Work one arm at a time.
Time palm rotation with the ascent.
Keep your upper arms fixed.
Do not swing the waiting hand.
Do not rotate your hips.
Finish the bottom extension calmly.

Common mistakes

Lifting both arms together

Maintain the alternating sequence; switch after the first arm finishes lowering.

Forcing rotation through the wrist

Avoid abruptly turning your palm at end range; use comfortable, controlled forearm supination.

Moving the elbow forward

Do not increase peak contraction by lifting the shoulder; keep your upper arm beside you.

Rotating the torso

Do not turn your chest toward the working arm; keep both shoulders balanced and facing forward.

Swinging the resting load

Do not swing the waiting dumbbell backward to prepare momentum; keep both hands’ bottom positions still.

Dropping quickly

Do not rush the arm switch and drop the dumbbell; maintain biceps control on the descent.

Frequently asked questions