Barbell Curl (Close Grip)
What Is the Barbell Curl (Close Grip)?
Barbell Curl (Close Grip) is an isolation exercise that primarily targets the biceps and also engages the brachialis and brachioradialis. It is a beginner-level movement performed standing with a straight barbell in an underhand grip, hands set about hip-width apart, inside the shoulder-width grip of a standard Barbell Curl.
Like any barbell curl, it builds size and strength in the elbow flexors. It usually sits late in an arm or upper-body session, after the heavier pulling work, as a way to add biceps volume with a bar that is easy to load in small steps.
The popular claim that a close grip shifts the work to the long (outer) head and builds the biceps peak is gym folklore rather than a measured effect, and coaching sources do not even agree on which head a close grip is supposed to favor. Both heads of the biceps bend the elbow and turn the palm up, so any palms-up curl trains the whole muscle, and no grip width isolates one head. What the narrow grip reliably changes is how the bar sits in your hands: a straight bar locks the palms fully up, and holding it inside shoulder width pulls the hands in against the slight outward angle the forearms naturally hang at, which many lifters feel in the wrists.
It suits anyone who wants a variation on the standard barbell curl and whose wrists are comfortable in full supination at this width. If the straight bar bothers your wrists, the EZ Bar Curl (Close Grip) keeps the same hand spacing with a slightly turned-in grip, and the Dumbbell Curl lets each forearm find its own angle. Beginners can start with an empty or light bar and build up once the elbows stay still through every rep.
Muscles Worked
- Biceps Brachii
- Primary
- Brachialis
- High
- Brachioradialis
- Medium
- Deltoid
- Low
- Erector Spinae
- Minimal
- Rectus Abdominis
- Minimal
Instructions
- Stand tall with your feet about hip-width apart and hold a barbell with an underhand grip, hands about hip-width apart and inside shoulder width.
- Let the bar hang at arm's length against the front of your thighs, with your elbows close to your sides and your wrists straight.
- Brace your core and keep your chest up and shoulders back.
- Curl the bar up by bending your elbows, keeping your upper arms close to your sides.
- Lift until the bar reaches upper-chest height and your forearms are close to vertical.
- Pause briefly and squeeze your biceps at the top.
- Lower the bar slowly until your arms are straight again.
- Repeat for the desired number of repetitions.
Common Mistakes
Gripping too narrowly
Hands so close they nearly touch force the wrists to bend toward the pinky side under load.
Swinging the bar
Using momentum to lift the bar reduces bicep engagement and increases injury risk.
Elbows swinging forward
Letting the elbows travel well forward turns the top of the rep into a front raise and lets the bar rest instead of keeping the biceps loaded.
Bending the wrists back
Letting the wrists fold back under the bar shifts strain onto the wrist joint and forearms.
Not controlling the descent
Lowering the bar too quickly wastes the eccentric phase and limits muscle growth.
Injuries
Barbell Curl (Close Grip) is a low risk exercise when performed with proper technique.
The wrists take the most strain. A straight bar locks your palms fully up, and your forearms naturally angle slightly outward from the elbows, so holding the bar inside shoulder width makes the wrists bend toward the pinky side under load. The front of the elbow, where the biceps tendon attaches, and the inner elbow can also get sore with heavy, high-volume curling. Swinging the bar or leaning back to finish a rep moves stress onto the elbow joints and lower back.
To keep the wrists comfortable, hold the bar with straight wrists, and move your hands a little wider if you feel the pinky side of the wrist working. If the ache stays, switch to the EZ Bar Curl (Close Grip), whose angled grip takes the forced rotation out of the wrists, or to the Dumbbell Curl or Dumbbell Hammer Curl. Add load in small steps and keep the reps strict.
Stop the set if you feel sharp pain in the wrist or at the front of the elbow. A sudden pop, bruising at the front of the elbow or new weakness turning your palm up needs a medical check before you curl again, and an ache that builds from one session to the next is a reason to change the variation rather than push through it.
Frequently Asked Questions
- Q: Can I use an EZ-bar instead of a straight bar?
Yes. A study of trained men curling at 65% of their max found no difference in biceps or brachioradialis activity between a straight barbell and an EZ bar, so the EZ Bar Curl (Close Grip) is a fair swap if the straight bar bothers your wrists.
- Q: What grip width should I use?
Set your hands about hip-width apart, inside shoulder width but not touching. If your wrists ache at that width, move your hands out a little at a time, since a straight bar usually sits most comfortably near shoulder width.
- Q: Does a close grip work the long head of the biceps more?
Not that anyone has shown, and no grip width isolates one head. The idea that a close grip targets the long (outer) head and a wide grip the short (inner) head is gym folklore, and both heads bend the elbow and turn the palm up, so every palms-up curl trains the whole biceps.
- Q: Why do my wrists hurt on close-grip curls?
A straight bar locks your palms fully up, and holding it inside shoulder width pulls your hands in against the slight outward angle your forearms naturally hang at, so the wrists bend toward the pinky side. Widen your grip, switch to an EZ bar, or use the Dumbbell Curl, which lets each wrist find its own angle.
- Q: Should I go heavy on this exercise?
Moderate weight with controlled form works best; avoid going too heavy to maintain strict technique.