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Dumbbell Concentration Curl animation

How to do the Dumbbell Concentration Curl

BicepsDumbbellIntermediate

The dumbbell concentration curl strips away every advantage your body uses to cheat, forcing your biceps to do every ounce of the work. Master this movement and you will build the kind of dense, peaked bicep development that only comes from true isolation.

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Muscles worked

Primary
Biceps
Secondary
BrachialisForearms

Step-by-step

  1. Sit at the edge of a bench, feet wide, and brace the back of your working upper arm firmly against the inside of your thigh.
  2. Let the dumbbell hang at full arm extension, supinate your wrist so your palm faces up, and own that starting position before you pull.
  3. Curl the dumbbell deliberately toward your shoulder, keeping your upper arm pinned to your thigh and your torso completely still throughout the rep.
  4. Lower under full control back to complete extension, resisting gravity the entire way down to maximize time under tension.

Common mistakes

  • Swinging the torso to initiate the curl, which shifts load off the bicep and onto momentum — anchor your free hand on your opposite knee and move nothing but your forearm.
  • Letting the upper arm drift away from the thigh at the top, which releases tension at the peak contraction — press your arm into your leg throughout the entire range of motion.
  • Cutting the rep short at the bottom by not fully extending the elbow, which eliminates the stretch stimulus — pause briefly at the bottom of each rep with the arm fully straightened.

Pro tip — At the very top of each rep, actively rotate your pinky toward your shoulder as you squeeze — this additional supination maximally shortens the biceps and dramatically intensifies the peak contraction beyond what the curl alone achieves.

Sets & reps by goal

Build muscle3–4 sets × 10–15 reps
Get stronger3–4 sets × 6–8 reps
Lose fat / tone3 sets × 12–20 reps

Rest: 60–90 sec between sets.

More Biceps exercises

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