What Is This Exercise?
🎯 Concentration Curl (Concentration Curl) – is Bicep Curl a variation intended for arm muscles. The exercise is classified as Training Methods category. Suitable for intermediate level athletes.
Primary Goal: Biceps isolation, peak contraction.
Muscle Group
arm
Level
Intermediate
Compound Exercise
Bicep Curl
Goal
Biceps isolation, peak contraction
📋 Step-by-Step
- 1. Sit down with your legs wide. Rest the elbow of one arm against the inner thigh on the same side. \n
- 2. Dumbbell lowered down, arm fully extended. \n
- 3. Curl the dumbbell toward your shoulder. The body does not move. \n
- 4. At the top point, squeeze the biceps maximally – 2-3 sec. \n
- 5. Slowly lower it down. \n
⚠️ Most Common Mistakes
- Body swing. \n
- Dumbbell too heavy. \n
- Incomplete extension at the bottom. \n
💪 Muscle Activation Table
| Muscle | Activation | Note |
|---|---|---|
| Biceps | ★★★★★ | Almost 100% isolation |
| Brachialis | ★★★★ | Deep muscle |
🔄 How Does It Differ From the Basic Version?
This is the most isolating biceps exercise. The supported elbow eliminates all assisting muscles. An excellent finisher after heavy barbell curls. Ideal for developing MMC (mind-muscle connection).
🔢 Sets and Reps
Concentration curl — an isolation biceps exercise performed with the elbow supported:
- For muscle growth: 3–4 sets × 8–12 reps.
- For focus and “pump”: 3 sets × 12–15 reps slowly.
- For Beginners: light weight, 10–12 reps for each arm.
🛡️ Safety
- Elbow firmly supported against the thigh and do not move.
- Do not rotate your torso — only the forearm moves.
- Full range of motion, but do not squeeze the wrist at the top.
- Use a weight you can control without throwing.
🙋 Frequently Asked Questions
Why Is This Exercise Popular? The support eliminates body swinging, so the biceps work in isolation.
Is Rotation Needed? Additional forearm rotation (supination) can increase biceps involvement.
When to Do It? Usually at the end of the workout, after heavier curls.