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Concentration Curl demonstration
Exercise library

Concentration Curl

The concentration curl isolates the biceps by bracing your arm against your thigh, removing momentum for a strong peak contraction.

DumbbellArmsBeginner
Equipment
Dumbbell
Focus
Arms
Level
Beginner
Suggested sets
3 sets of 10–12 reps per arm.
Muscles worked
BicepsForearms

How to do it

  1. 1Sit on a bench with your legs apart and hold a dumbbell in one hand.
  2. 2Rest the back of that upper arm against the inside of your thigh.
  3. 3Let the dumbbell hang with your arm nearly straight.
  4. 4Curl the weight up toward your shoulder, squeezing the biceps hard.
  5. 5Lower it slowly to a full stretch and repeat, then switch arms.

Tips & tricks

  • Keep your upper arm pinned against your thigh the whole time.
  • Squeeze at the top for a second before lowering.
  • Control the weight down rather than dropping it.

Common mistakes

  • Using your shoulder or body to swing the weight.
  • Cutting the range short at the bottom.
  • Rushing the lowering phase.

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