Exercise guide
Dumbbell Concentration Curl
- Beginner
- Isolation
- Rep-based
- Upper arms
The concentration curl is a premier isolation movement that targets the biceps brachii, specifically emphasizing the peak of the muscle by eliminating momentum. Bracing the arm against the thigh ensures the bicep performs all the work, leading to better muscle fiber recruitment.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Sit on the edge of a flat bench with your feet spread wide and flat on the floor.
- Grip a dumbbell in your right hand and lean forward, placing the back of your right upper arm against the inside of your right thigh.
- Extend the arm fully so the dumbbell is hanging near your ankle, and place your left hand on your left knee for stability.
How to do it
- Exhale and curl the weight toward your shoulder by flexing the elbow, keeping the upper arm stationary against your thigh.
- Squeeze the bicep forcefully at the top of the movement for one second.
- Inhale and slowly lower the dumbbell back to the starting position over a 3-second count.
- Perform the desired number of repetitions, then switch to the left arm.
Form checklist
- Keep the elbow pinned to the inner thigh to prevent the shoulder from taking over.
- Avoid swinging the torso or using momentum to lift the weight.
- Maintain a neutral wrist position throughout the curl.
- Ensure the arm reaches full extension at the bottom of every rep.
Pro tips
- Supinate your wrist at the top of the movement by turning your pinky finger toward your shoulder to maximize the peak contraction.
- Focus your eyes on the bicep during the set to enhance the mind-muscle connection.
Make it harder
- Slow down the eccentric (lowering) phase to 4-5 seconds to increase time under tension.
- Pause for 2 seconds at the 'sticking point' (midway up) to challenge the muscle's strength.
Frequently asked
- What muscles does the dumbbell concentration curl work?
- The dumbbell concentration curl primarily targets the biceps.
- What equipment do you need for the dumbbell concentration curl?
- The dumbbell concentration curl uses dumbbell.
- Is the dumbbell concentration curl good for beginners?
- Yes. The dumbbell concentration curl is a beginner-friendly movement and a strong foundation to build on.