Concentration Curl Exercise | Dumbbell Form & Mistakes

The concentration curl is an excellent isolation exercise for the biceps, predominantly loading the long head of the muscle. The name comes from the position that you will end up in when performing the seated variation of the exercise, resembling the famous statue ‘The Thinker’.

This article will run through how to perform this exercise effectively, with all the needed do’s and don’ts!

How To Perform Concentration Curls

Sit down on a flat bench with your legs positioned slightly wider than shoulder width apart (the stance used in the video is different, but the concept is still the same – both methods are effective!).
Your knees should be bent and feet flat on the floor. At this stage of the exercise, the dumbbell should be on the floor, between your legs.
With one arm, firmly grip the dumbbell whilst keeping the previously mentioned body position.
Place your resting arm on your leg to support your upper body. For example, if you are training the right bicep, the left arm will be resting and placed on the left leg.
With the triceps of the arm being worked pressed against the inside of your leg on the same side, flex at the elbow. This will move the dumbbell in a curling movement until your elbow is fully flexed and the biceps cannot contract any further. Realistically, the dumbbell should reach to around shoulder-height.
Once this point is reached, pause for a brief second, and squeeze the working bicep. Remember, ‘concentrate’ on that mind to muscle connection!
Return to the start position in a slow and controlled manner, until the elbow is fully extended again.
Once the required number of repetitions have been performed with one arm, switch arms and apply the same technique.

Tip: If you need to use momentum to get the weight up, then it’s too heavy! This exercise is best performed with 6+ repetitions (depending on your training aim), so the load needs to be heavy enough to stimulate an adaptation, but also light enough to allow you to execute the exercise safely and effectively!

Find additional bicep exercises here:

The 6 Best Bicep and Tricep Exercises for Mass

There's more to arm day than bicep curls, trust us.

06/14/2019 By Grant Koch

Common Mistakes and How to Fix Them

Excessive Load Used

When the weight used is too heavy, then range of movement tends to be compromised. Additionally, this tends to result in the exerciser using momentum to shift the weight. This will ultimately result in fewer motor units being recruited & less eccentric muscle damage being made, ultimately hindering strength and size adaptations from being made. Simply reduce the load and focus on technical execution before increasing the load.

Tip: Train 1-2 reps shy of failure if you want to maintain perfect technique (although training to failure is sometimes beneficial when the aim is hypertrophy!).

Not Using a Variety of Methods

Using varying stimulus can help to adapt the exercise based on the needs of the individual. This means that you can manipulate the exercise to make it easier or more difficult, without changing the load (e.g., performing this exercise with a 45-degree bench instead of seated at the end of the bench). Additionally, using different training systems can help to vary the stimulus, ensuring that you are working with sufficient intensity to promote adaptations.

Tip: Next time you’re performing the concentration curl, try out some of the following methods: drop-sets, supersets, or 21’s.

Mind-Muscle Connection

Going through the motions when you are working out is unlikely to get you the results that you want. Not only does the exercise need to be intense enough, but so does the effort that you put in. Being focused when you exercise is important, as it is essential when you are trying to present your muscles with sufficient stimulus to adapt to.

Tip: Next time you’re performing the concentration curl, focus on squeezing the muscle hard at the top of the rep, maintaining consistent and controlled tension as you lower the load.

Take Home Message

As with most muscle groups, the biceps will respond well to isolation exercises. The concentration curl is just one example of an effective exercise to strengthen and grow your biceps. Once you become well-conditioned to this exercise, DOMS will likely no longer be intense, so you may also be able to train the muscle group more frequently.

Don’t forget to make sure your sleep and nutrition are sufficient to support the work you put in at the gym!