Arms
The main area this variation is designed to train.
Exercise guide
Concentration Curls
Learn how to do the Concentration Curls exercise, which muscles it works, the equipment you need, and common mistakes to avoid.
Dumbbell
Use this to decide whether the movement fits your current setup.
Beginner
A quick checkpoint for how simple or technical the movement usually feels.
Arms
Secondary support can come from other nearby stabilizers depending on how you perform the movement.
Strength
Movement pattern: curl. This is more of an isolation-focused exercise.
Learning and repeating well
Use this page to understand the setup first, then track the movement consistently in Logbook once it fits your program.
Instructions
How to do Concentration Curls
Keep the setup simple, use a controlled pace, and repeat the same movement pattern each rep.
- Sit 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.
- Use 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.
- While 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.
- Slowly begin to bring the dumbbells back to starting position as your breathe in. Caution: Avoid swinging motions at any time.
- Repeat for the recommended amount of repetitions. Then repeat the movement with the left arm.
Benefits
- Builds strength and control through the arms region.
- Makes it easier to focus on one area when you want extra practice or volume.
- Gives you a repeatable way to track progress inside Logbook over time.
Common mistakes
- Using more weight or speed than you can control cleanly.
- Cutting the range of motion short and rushing through the reps.
- Changing your body position between reps instead of keeping the movement repeatable.
Related workouts
Workout templates that use this exercise.
If you want to see this movement inside a more complete training session, start here.
Arm Workout
A focused arm session with direct biceps and triceps volume you can recover from.
View workout3-Day Full Body Split
A three-day split that spreads total weekly work across three full-body sessions.
View workout4-Day Upper Lower Split
A simple four-day split that gives each half of the body two quality sessions each week.
View workout5-Day Bodybuilding Split
A traditional five-day bodybuilding split for lifters who enjoy focusing on one or two regions per session.
View workoutRelated exercises
More exercises in the same lane.
Use these when you want a similar movement pattern, a different setup, or more exercise options for the same target area.
Alternate Hammer Curl
Alternate Hammer Curl is a beginner strength that mainly trains your arms using dumbbell.
View exerciseAlternate Incline Dumbbell Curl
Alternate Incline Dumbbell Curl is a beginner strength that mainly trains your arms using dumbbell.
View exerciseClose-Grip Dumbbell Press
Close-Grip Dumbbell Press is a beginner strength that mainly trains your arms using dumbbell.
View exerciseDecline Dumbbell Triceps Extension
Decline Dumbbell Triceps Extension is a beginner strength that mainly trains your arms using dumbbell.
View exerciseFAQ
Common questions about Concentration Curls.
Use these answers as a practical starting point, then adjust based on your setup, comfort, and goals.
What muscles does Concentration Curls work?
Concentration Curls mainly works the arms. It can also involve supporting muscles around the same region depending on your setup and range of motion.
Is Concentration Curls beginner-friendly?
Yes. This exercise is listed as beginner-friendly, which usually means the setup and learning curve are more manageable.
What equipment do I need for Concentration Curls?
You will usually need Dumbbell for this variation.
How should I progress Concentration Curls?
Start by making the reps smoother and more repeatable. Once the whole set looks controlled, add a small amount of load or one extra rep at a time.
Track this exercise for free in Logbook.
Once the movement is in your plan, use Logbook to record sets, reps, load, and progress without guessing what happened last week.
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