How to do the Kettlebell Concentration Curl
- Sit on the bench with your feet apart and hold a kettlebell.
- Rest your upper arm firmly against your inner thigh for stability.
- Curl the weight up towards your shoulder, keeping your arm still.
- Slowly lower the weight back down to the starting position.
Full technique — 7 steps
- Sit on a flat bench with feet set wide and hold a kettlebell by the handle in one hand.
- Lean forward and rest the back of your upper arm against your inner thigh near the knee.
- Let the kettlebell hang with an underhand grip and your elbow straight.
- Curl the kettlebell toward your shoulder without letting your upper arm slide off the thigh.
- Squeeze the biceps briefly at the top.
- Lower the kettlebell until your elbow is fully extended again.
- Finish all reps on one side, then switch arms and repeat.
Common mistakes
- Upper arm drifting off thigh
- Shrugging shoulder to finish reps
- Cutting the bottom range short
- Twisting torso during the curl
Form cues
- Keep upper arm still
- Palm stays up
- Fully extend each rep
- Keep shoulders down
Compared with similar variants
| Kettlebell Concentration Curl | Hammer Curl | Alternating Dumbbell Curl | Barbell Curl | |
|---|---|---|---|---|
| Level | Beginner | Beginner | Beginner | Beginner |
| Technique to learn | easy | easy | easy | easy |
| How tiring | low | low | low | low |
| Elbow | low | low | low | moderate |
| Wrist | low | low | low | low |
| Equipment | Kettlebell, Flat bench | Dumbbells | Dumbbells | Barbell |
An estimate from our exercise ratings, not medical advice. How we rate exercises
Substitutes by equipment
Same muscles, same movement — pick the version you have the gear for.
Cable machine
- Single-Arm Cable Cross-Body Curl Harder
- Single Arm Cable Curl Same level
No equipment
- EZ Bar Preacher Curl Same level
- EZ Bar Spider Curl Same level
Dumbbells
- Stability Ball Dumbbell Preacher Curl Same level
- Standing Concentration Curl Same level
Resistance bands
- Resistance Band Spider Curl Same level
- Squatting Resistance Band Curl Same level
Where to start and where to go next
Same muscles, same movement. Too hard for now — step down; once it gets easy — step up.
- Easier Alternating Machine Biceps Curl
- This exercise Kettlebell Concentration Curl
- Harder Barbell Curl
- Harder Bent Over Barbell Curl
Too hard for now? Start with the Alternating Machine Biceps Curl.
Quick answers
What muscles does the Kettlebell Concentration Curl work?
Primary: Biceps 10/10. Also works: Forearms 5/10.
Which joints does the Kettlebell Concentration Curl load?
Elbow: low, Wrist: low.
When should I do the Kettlebell Concentration Curl in a workout?
Finisher. Goes last, once the heavy work is done. ≈ 7 min with rest.
How many sets and reps of the Kettlebell Concentration Curl?
Strength: 3–4 sets of 6–8 reps, rest 1 min 30 s, 2 reps in reserve. Muscle growth: 3 sets of 10–15 reps, rest 1 min, 2–3 reps in reserve. Endurance: 2–3 sets of 15–20 reps, rest 45 s, 3–4 reps in reserve.
What can I do instead of the Kettlebell Concentration Curl?
Cable machine: Single-Arm Cable Cross-Body Curl, Single Arm Cable Curl. No equipment: EZ Bar Preacher Curl, EZ Bar Spider Curl. Dumbbells: Stability Ball Dumbbell Preacher Curl, Standing Concentration Curl. Resistance bands: Resistance Band Spider Curl, Squatting Resistance Band Curl.
What is an easier version of the Kettlebell Concentration Curl?
Alternating Machine Biceps Curl (Beginner).
What is a harder version of the Kettlebell Concentration Curl?
Barbell Curl (Beginner), Bent Over Barbell Curl (Intermediate).
