How to Do the Dumbbell Bicep Curl
The dumbbell biceps curl is the basic way to train the front of your upper arm. Because each arm works on its own, it also exposes strength gaps between sides. It suits beginners and anyone adding direct arm volume.
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Muscles worked
Primary
- Biceps
Secondary
- Forearms
How to do the Dumbbell Bicep Curl
- 1
Stand tall holding a dumbbell in each hand with your palms facing forward.
- 2
Pin your elbows to your sides and brace your abs.
- 3
Curl both dumbbells up toward your shoulders without moving your upper arms.
- 4
Squeeze your biceps at the top for a moment.
- 5
Lower the weights slowly until your arms are fully straight.
- 6
Repeat without swinging your body.
Form cues to remember
- Elbows glued to your ribs
- Squeeze at the top
- Lower for a slow three count
- No hip swing
Dumbbell Bicep Curl video tutorial
Common mistakes
Swinging the weights up
Use a lighter weight and keep your torso still.
Elbows drifting forward
Keep them pinned at your sides so the biceps do the work.
Dropping the weight fast
Lower for two to three seconds to get the stretch and keep tension.
Stopping short at the bottom
Straighten your arms fully each rep for the full range.
Sets and reps
| Muscle growth | 3–4 sets of 8–12 reps, 60–90 sec rest |
|---|---|
| Endurance | 2–3 sets of 15–20 reps, 45–60 sec rest |
Keep your wrists straight and avoid leaning back to heave heavy weights up, which strains your lower back. Ease in if you have elbow tendon soreness.
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Dumbbell Bicep Curl FAQ
Should I curl both arms together or alternate?
Either works. Alternating lets you focus on one arm and cheat less; curling together saves time. Pick whichever you can do with cleaner form.
How heavy should I go on dumbbell curls?
Choose a weight you can lift for 8–12 clean reps with your last rep close to failure. If you have to swing your body, it is too heavy.
Why do my forearms tire before my biceps?
Your grip works hard holding the dumbbell, and a tight squeeze can fatigue it early. Relax your grip slightly and keep your wrists neutral.
