Intermediate

Incline Dumbbell Curl

Lying back on an incline lets your arms hang behind the torso, which puts the biceps long head on a deep stretch and loads it hard through the bottom of the range. That stretched position is prized for building the outer biceps peak. It demands strict form, so treat it as a focused hypertrophy movement rather than a heavy lift.

Equipment
Bench, Dumbbell
Body part
Biceps
Type
Strength
Browse by muscle
Biceps Brachii Long Head
Browse by movement
Elbow Flexion
Muscles worked
Target
Biceps Brachii Long Head
Secondary
Biceps Brachii Short Head, Brachioradialis

How to do it

  1. 1

    Set an adjustable bench to about a 45 to 60 degree incline and sit back against it.

  2. 2

    Let your arms hang straight down with a dumbbell in each hand, palms forward.

  3. 3

    Keep your upper arms roughly vertical and your shoulders pressed into the bench.

  4. 4

    Curl the dumbbells up by flexing the elbows, keeping the upper arms from swinging forward.

  5. 5

    Squeeze at the top, then lower slowly to the full stretch at the bottom.

  6. 6

    Exhale as you curl, inhale as you lower.

Tips

  • Let the arms hang behind your body at the bottom; that stretch is the whole benefit.
  • Keep your shoulders back against the pad instead of rolling them forward to help.
  • Use lighter weight than your standing curl and prioritize a clean, full range.

Variations

Common mistakes

  • Setting the backrest steeper than about 60 degrees, so the arms hang beside your ribs rather than behind them. Above that angle the long head is no longer stretched and you are doing a seated curl with a lean.
  • Bouncing out of the bottom to launch the rep, using the stretched tendon as a spring. The deepest point is where the arm has the least leverage, so make it the slowest part of the rep.
  • Bringing your head forward off the pad to watch the dumbbells, which pulls the shoulders away from the bench and shortens the hang you set the bench up for.
  • Sliding your hips down the bench as the set gets hard, which brings your arms back underneath your shoulders and quietly removes the stretch.

Frequently asked

How many sets and reps of the incline dumbbell curl should I do?
Two or three sets of 10 to 12, using roughly 60 to 70 percent of what you curl standing. The stretched start takes away momentum you did not know you were using, so the first session tends to humble people. Add reps to 12 before you take the next pair, and place this after your heavier curls rather than first. Once a week in this position is enough if a standing curl is already in the program.
How do I get the incline dumbbell curl stretch without an adjustable bench?
Lie face-up on a flat bench and let the arms hang beside it; that is the lying dumbbell curl, and the stretch is deeper still. At home, lie face-up along the edge of a firm bed or a sturdy bench-height surface and let the working arm hang down behind the line of your body. What you cannot fake is the support. Sitting on a backless bench and leaning back will put the strain in your lower back long before your biceps notice it.
What is the incline dumbbell curl for, and who should avoid it?
It loads the long head of the biceps in a lengthened position, which builds the outer sweep of the arm rather than raw curling strength. Treat it as a hypertrophy accessory for lifters who already have a main curl in the program. It is not a lift to chase weight on; the numbers stay small, and that is fine. Reduce the incline or leave it out if hanging the arm behind you gives you a sharp pull at the front of the shoulder instead of a stretch through the muscle.

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