Concentration Curl
Muscles worked
Instructions
- 1Sit down on a flat bench with one dumbbell in front of you between your legs. Your legs should be spread with your knees bent and feet on the floor.
- 2Use your right arm to pick the dumbbell up. Place the back of your right upper arm on the top of your inner right thigh. Rotate the palm of your hand until it is facing forward away from your thigh. Tip: Your arm should be extended and the dumbbell should be above the floor. This will be your starting position.
- 3While holding the upper arm stationary, curl the weights forward while contracting the biceps as you breathe out. Only the forearms should move. Continue the movement until your biceps are fully contracted and the dumbbells are at shoulder level. Tip: At the top of the movement make sure that the little finger of your arm is higher than your thumb. This guarantees a good contraction. Hold the contracted position for a second as you squeeze the biceps.
- 4Slowly begin to bring the dumbbells back to starting position as your breathe in. Caution: Avoid swinging motions at any time.
- 5Repeat for the recommended amount of repetitions. Then repeat the movement with the left arm.
About Concentration Curl
The concentration curl is a strict isolation exercise done seated, the elbow braced against the inside of the thigh. This position removes all momentum and focuses the effort on the biceps, especially its peak. You raise the dumbbell slowly in supination, squeeze hard at the top, then control the descent through the full range. It is a go-to movement for improving the mind-muscle connection and 'finishing' the biceps at the end of a session. Since it fully isolates the muscle, there is no need to go heavy: contraction quality matters far more than the load here.
check_circleBenefits
- check_circleIsolates the biceps perfectly with no momentum possible
- check_circleEnhances the biceps peak and definition
- check_circleImproves unilateral mind-muscle connection
lightbulbExecution tips
- lightbulbBrace the elbow firmly against the inner thigh
- lightbulbLift the dumbbell slowly with full supination
- lightbulbSqueeze the biceps hard at the top of the movement
- lightbulbLower under control without snapping the arm straight
warningCommon mistakes
- warningLifting the elbow off the thigh during the curl
- warningUsing too heavy a dumbbell and losing control
- warningSwinging the torso to assist the movement
- warningNeglecting the lowering phase
helpFrequently asked questions
Does the concentration curl really build the biceps peak?expand_more
It maximizes biceps activation through strict isolation, but the peak depends mostly on genetics and overall volume.
How much weight for the concentration curl?expand_more
Choose a light to moderate weight that lets you control every rep without swinging your body.
How many reps for the concentration curl?expand_more
Aim for 10 to 15 slow, controlled reps: it is a pump and connection exercise, not a pure-strength one. Chase the peak contraction at the top rather than the weight.
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