What you'll gain

• Isolates the biceps with zero body english.

• Builds peak shape and end-range biceps detail.

• Trains a strict curl pattern that carries over to all other curl variations.

Step-by-Step Instructions

1. 1

   Sit on the edge of a bench with your feet planted wide and a dumbbell in one hand.

2. 2

   Lean forward slightly and brace the back of your working arm against the inside of your thigh.

3. 3

   Let the dumbbell hang at full arm extension with the palm facing the opposite leg.

4. 4

   Curl the dumbbell up toward your shoulder by bending only at the elbow, keeping the upper arm pinned.

5. 5

   Squeeze the biceps hard at the top with the dumbbell close to your shoulder for a one-second hold.

6. 6

   Lower the dumbbell slowly to full extension over 2 to 3 seconds, then repeat before switching arms.

Common Mistakes

• Lifting the elbow off the thigh mid-rep, which lets the shoulder swing and steals work from the biceps.

• Using too heavy a dumbbell so the body sways forward and back to lift it.

• Cutting the range short by stopping before the arm fully extends at the bottom of each rep.

• Dropping the weight quickly on the way down, skipping the slow descent where most growth happens.

About This Exercise

The dumbbell concentration curl is the most isolated curl variation in any program. Sitting down with the elbow braced against the inner thigh removes every cheat and forces the biceps to do all the work. It's the go-to move when the goal is detail, peak shape, and a strong end-range squeeze. For hypertrophy programs and arm-focused content, this is a clean accessory pick that drops easily into pull-day finishers or dedicated arm blocks. App builders can use it in beginner education on what real biceps isolation feels like, and creators get a clip that visually screams arm day for thumbnails and shorts.

Looking for an exercise animation collection for your app, coaching platform, or content workflow? MoveKit gives you consistent quality across every movement so your product feels cohesive from first launch through scale.

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