Dumbbell Curl
Arms
Weight & Reps
Dumbbell
Dumbbell curls allow each arm to work independently, helping identify and correct strength imbalances. They can be performed simultaneously, alternating, or one arm at a time.
How to Do Dumbbell Curl
- Stand with dumbbells at your sides, palms facing forward (or start palms in and supinate as you curl)
- Curl one or both dumbbells up, keeping your elbows pinned to your sides
- Rotate your wrist slightly outward (supinate) at the top to maximize bicep peak contraction
- Lower with a slow negative, fully extending your arm before the next rep
Form Cues
- Stand with dumbbells at your sides, palms facing forward (or start palms in and supinate as you curl)
- Curl one or both dumbbells up, keeping your elbows pinned to your sides
- Rotate your wrist slightly outward (supinate) at the top to maximize bicep peak contraction
- Lower with a slow negative, fully extending your arm before the next rep
Common Mistakes to Avoid
- Alternating too quickly and using the momentum of one arm to help the other
- Swinging the body to help lift the weight instead of isolating the biceps
- Not supinating (rotating the wrist outward) at the top, missing the peak contraction
Muscles Worked
Primary
Biceps Brachii (Short Head)
Biceps Brachii (Long Head)
Secondary
Brachialis
Brachioradialis
Forearm Flexors
Recommended Sets and Reps
Strength
4-5 sets
3-5 reps
3-5 min rest
Hypertrophy
3-4 sets
8-12 reps
60-90s rest
Endurance
2-3 sets
15-20 reps
30-60s rest
Variations and Alternatives
Frequently Asked Questions
What muscles does the dumbbell curl work?
Dumbbell curls primarily target both heads of the biceps brachii, with secondary engagement from the brachialis, brachioradialis, and forearm flexors.
How much should a beginner dumbbell curl?
Beginner men typically curl 10-20 lb (4.5-9 kg) dumbbells per hand, while beginner women start with 5-10 lb (2-4.5 kg). Focus on strict form rather than heavy weight.
Dumbbell curl vs hammer curl — which is better?
Dumbbell curls with supination target the biceps peak more, while hammer curls (neutral grip) work the brachialis and brachioradialis for arm thickness. Use both — standard curls for the biceps peak and hammer curls for overall arm width.
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