How to Do the Barbell Curl for Biceps Size and Strength | BarBend (2024)

It’s not just about busting through your shirt sleeves (although that’s pretty cool if it’s your thing). Building strong biceps isn’t just about aesthetics. The best biceps exercises will prepare you to take on your major pulling moves — think the pull-up and even the deadlift. And the barbell curl is one of the biceps classics for a reason. Here’s everything you need to know about this powerhouse of a lift.

Editor’s Note: The content on BarBend is meant to be informative in nature, but it should not be taken as medical advice. When starting a new training regimen and/or diet, it is always a good idea to consult with a trusted medical professional. We are not a medical resource. The opinions and articles on this site are not intended for use as diagnosis, prevention, and/or treatment of health problems. They are not substitutes for consulting a qualified medical professional.

How to Do the Barbell Curl

Theoretically, the barbell curl is simple to do. There’s more nuance to it than one may think. Here’s how to lock in your form.

Equipment Needed: You’ll just need a barbell, weight plates, and collars. If you want, you can also perform these with a straight fixed barbell.

• Step 1 — Stand tall with your shoulder blades down your back, chest up, and shoulder pulled back. Your grip should be slightly wider than hip-width (this can vary), with your palms facing away from your body.
• Step 2 — Squeeze the bar. This will activate all of the muscles in your forearms and upper arm. You’ll also be tight and less prone to flaring your arms out or performing generally sloppy reps.
• Step 3 — Curl the bar. Instead of dragging the bar up the body, think about keeping the elbows slightly in front of the body at all times. Continue to curl up, focusing on not letting the shoulders come forward. Your shoulders will slightly — slightly! — come into to play when your elbows drift forward. Remember to primarily curl with your biceps.
• Step 4 — Curl until you feel your biceps contract the most. Find that spot, hold the weight there for a beat. Actively flex your biceps throughout the entire movement, especially at the top.
• Step 5 — Control the bar on the way down. Repeat for reps.

Coach’s Tip: Really focus on controlling the eccentric — lowering — portion of the lift. For the most strength and muscle-building potential, lower the bar slowly and with as much control as you can.

Barbell Curl Variations

Want to accomplish pretty much the same task as the barbell curl, but with slight tweaks here and there?

Eccentric Barbell Curl

[Read More: Master the Pull-Up for Back Muscle, Strength, and Full-Body Control]

Why Do It: The eccentric curl is a way to overload the biceps and creates massive amounts of tension on the tissues. Eccentric training focuses on the lowering portion of your lifts and can help spur a tremendous amount of muscle growth.

Equipment Needed: Barbell, weight plates, collars

1. Set up for a barbell curl as usual.
2. Curl the weight up (you can have a partner help you if you’re using a heavier load than normal).
3. Slowly lower the load under control on a tempo of three to seven full seconds on the way down.
4. Repeat for reps.

Drag Curl

[Read More: 3 Reasons Why Bicep Curls Are Good for Your Shoulders]

Why Do It: This variation locks your arms into place and creates an immense amount of tension on the biceps. With the drag curl, you can’t heft nearly as much weight, but you’ll certainly tax your muscles. Try using this move as a finisher toward the end of your workout.

Equipment Needed: Barbell, weight plates, barbell collars

1. Grab the bar with a similar position as you would for a barbell curl. Allow your arms to come to full extension at rest while holding the bar. This might mean widening your grip slightly. Make sure your shoulder blades are back and down.
2. Sit your hips back very slightly and brace your core. Prepare to maintain this very slight hip hinge and the core brace.
3. Draw your arms toward you so that your upper arms are flush with or slightly behind your torso. Flex your elbows to squeeze the weight up, keeping the barbell as close to your body as possible throughout the whole range of motion.
4. Lower and repeat for reps.

Seated Barbell Curl

[Read More: Try This Shoulder and Biceps Workout to Build Muscle]

Why Do It: The seated curl is a partial range of motion barbell curl, as it often omits that bottom segment of the range of motion. You can be effective at increasing the loading on the bicep as well as isolating the upper aspects of the biceps.

Equipment Needed: Barbell, weight plates, collars, weight bench

1. Sit straight up on a weight bench with the barbell in your lap and your palms facing up.
2. Brace your core and dig your feet into the ground.
3. Perform your curl, squeezing at the top.
4. Control the eccentric (lowering) portion of the weight. Repeat for reps.

Barbell Curl Alternatives

Don’t want to or can’t use a barbell for your curls? Dumbbells and a pull-up bar will serve you well.

Hammer Curl

[Read More: Hammer Curls Vs. Biceps Curls — Which is Better for Building Bigger Arms?]

Why Do It: The hammer curl targets the biceps and the forearms at a slightly different angle, adding another dimension to your arm training and development. You’ll be able to keep your wrists in a neutral position, offering a slightly different training stimulus and often a lot more comfort for athletes.

Equipment Needed: Dumbbells

1. Stand tall with your chest up and your shoulders back and down. Squeeze the dumbbells in your hands, at your sides.
2. Keeping your palms facing each other, curl the weights up.
3. Squeeze when you’re reached the top of your range of motion. Control the weights on the way down.
4. Repeat for reps, keeping your wrists in that neutral position the whole time.

Preacher Curl

[Read More: The Best Arm Exercises to Add to Your Workout Routine]

Why Do It: The preacher curl can be done with the barbell, dumbbells, EZ bar, or machine. It’s a versatile option that has you place your arm at an angle, on a preacher curl bench or adjustable weight bench on an incline. You’ll keep your upper arm and shoulder supported on the pad to minimize movement, which helps isolates the biceps completely.

Equipment Needed: Adjustable weight bench OR preacher curl bench; dumbbell, EZ-bar, barbell, OR machine

1. Holding a dumbbell, place your upper arm along an inclined weight bench or preacher curl bench. Position your torso so that you can maintain this position with strength and stability.
2. Curl the weight, keeping the only movement in your biceps.
3. With control, lower the weight back until your forearm is nearly touching the bench. Repeat for reps.

Chin-Up

[Read More: Yes, The Are Different. And Yes, It Matters.]

Why Do It: The chin-up is still one of the best pull exercises to build overall biceps strength and size. If you can’t do a chin-up, you can use a pull-up assist band or a pull-up assist machine to help build your strength up to your first rep.

Equipment Needed: Pull-up bar, pull-up assist band (optional)

Who Should Do the Barbell Curl

The barbell curl can help increase overall arm and grip strength and upper body mass for strength, power, and even beginners aiming for general increases in physical activity.

Strength and Power Athletes

Strength and power athletes can use the barbell curl, primarily to improve arm and grip strength, enhance eccentric loading potentials (injury prevention from strains and tears) during heavy deadlift and pulling training. Here’s more about how stronger biceps can help in specific strength sports:

• Strongman Athletes: Strong biceps can play a big role in helping protect you from injury while improving your grip strength during heavy pulls, farmer’s carries, truck pulls, and more.
• Powerlifters: Like strongman athletes, strong biceps can impact pulling strength and performance, especially helping to resist bicep strains and tears.
• Weightlifters: While weightlifters don’t want to pull with the arms during snatches and isn’t something we want in most lifts, stronger arms, in general, can increase pulling and grip strength. Having strong arms can also help during the pull under phase as well.

Bodybuilders

Bodybuilders strive to put on as much muscle as possible onto their frame while losing fat. In bodybuilding, every muscle is on display, so these athletes pay as much attention to their biceps as they do their back exercises or chest exercises. The barbell curl can be loaded heavier than other biceps for more overall growth, so it’s a great choice for those looking to sculpt their physique.

Beginners

Even if you don’t want or need the size of a bodybuilder or strength of a strongwoman, everyday gymgoers — including beginners in the gym— can still strive for more mass and strength. This is also a relatively simple move to learn, so it’s often among the first that newer athletes feel comfortable trying out. It can also help with general gym performance, confidence, and biceps mobility.

Barbell Curl Sets and Reps

Below are two primary training goals and programming recommendations when programming barbell curls into workout programs.

• For Strength: Do four to six sets of four to eight repetitions. Remember to start with lighter weight and perform one to two warm-up sets before increasing the weight on the bar and going for broke.
• To Build Muscle: Aim to do five to eight sets of eight to 15 repetitions. Again, perform a couple of warm-up sets until the movement feels fluid and you’re ready to crush your working sets — then aim for failure.

Benefits of the Barbell Curl

Below are four benefits of the barbell curl that strength, power, and fitness athletes can benefit from.

Improved Grip Strength

The barbell curl can be done to help improve grip and arm strength, both of which can impact pulling strength and performance. Your biceps are moving the weight, but your hands, wrists, and forearms are supporting it. All those secondary muscles will be taxed and you’ll have a crushing grip as a result.

More Potential Resilience Against Injury

The biceps are responsible for elbow flexion as well as supporting the grip muscles in pulls and loaded carries. Weak and underdeveloped biceps can cause grip issues, strain to the biceps, and in some cases muscle tears. Think of it this way, all things being equal, stronger biceps can be more resilient biceps.

Increased Upper Body Mass

If you want to fill out that shirt, the barbell curl can help you get there. Anytime you stress a muscle, it tends to respond by building itself back up to be bigger and stronger. (Assuming that your macros are dialed in and you’re eating enough.)

The barbell curl can be loaded up with relatively more weight than other curling exercises. That means you can load the muscle faster and progress the weight for longer without hitting a plateau.

They’re Accessible

Whether you own a barbell, a pair of dumbbells, or even a quality kettlebell — you can curl! You don’t need to haul a cable machine into your home gym to build a set of Larry Scott-like sleeve-huggers. You can do barbell curls in about a square foot if you really needed to. They’re simple and easy to execute.

Muscles Worked by the Barbell Curl

The barbell curl is a single-joint accessory/hypertrophy exercise that can be highly effective at targeting the arms, specifically the muscles below.

Biceps

You know this, of course, but here’s some biceps knowledge you may not be privy to. Your biceps have one function, and that’s to flex your elbow (meaning bring your lower arm towards your face). That’s exactly what this move does.

Forearms

Your biceps move the curling bar, and your forearms are what support it. The forearms aren’t a primary player in the biceps curl, but they’re crucial to holding onto all that weight and keeping it steady. As you curl heavier weights over time, you may well notice an increase in both forearm size and grip strength.

Common Barbell Curl Mistakes

While this move is pretty straightforward, that doesn’t mean it’s foolproof. Check in with your form to make sure you’re not making any of these errors.

Unintentional Body English

The last thing you want to do is curl up the bar during a biceps curl by using everything in the kitchen sink — your back, your legs, your shoulders, etc. Using your whole body to heft up the weight, especially at the beginning of a set, generally means you’re going too heavy. Slide some plates off the bar. Stand with your back against a wall or opt for preacher curls to train that stillness and focus on your biceps.

That said, you might want to use body English to get a particularly heavy bar into the top position. Then, use all the might in your biceps to resist the lowering of the weight to make the eccentric portion as slow as you can. That’s a great intentional use of added momentum.

Rushing the Eccentric

Take your time lowering the weight. It’s all too easy to blaze through barbell curls — or any isolation exercise, really — but doing so will rob you of a lot of potential gains. You’ll get a lot of muscle hypertrophy potential from lowering the bar slowly with each rep, really feeling your muscle lengthening. Spending the extra time under tension will boost your muscle-building potential.

Pulling Through Wrist Pain

Barbell curls just don’t agree with everyone’s wrists. It can help tremendously to dynamic warm-up with wrist rolls and waves before barbell curls to help prevent any issues — but sometimes, the palms-up position on a bar just isn’t where it’s at for your strength and mobility level.

[Read More: 5 Unique Biceps Exercises to Use for Mass and Strength]

Instead of pushing through it, try dumbbell curls, hammer curls, or even EZ-bar curls. This way, you can build your biceps with less pressure on your wrists.

Curl it Up

Adding the barbell curl to your biceps workouts is a solid way to improve your upper arm strength. It’s the first exercise many people try out with a barbell for a reason — it’s fairly intuitive, and many people coming into the gym are after those isolation exercises that are easy to pick up and go.

But don’t sleep on these as an advanced athlete. Developing those biceps can have a lot of carryover potential into supporting your back through big pulls like the bent-over row. Plus, these will help you fill out that T-shirt pretty darn well.

FAQs

It’s a simple move, but you want to do it right — and at the right times. Here’s what you’ve got to pay attention to with this move.

More Biceps Training Tips

• The Best Bodybuilding Arm Workout, Customized to Your Experience Level
• Try This Biceps Workout With Dumbbells for Superior Muscle Growth
• The 10 Best Barbell Biceps Exercises to Boost Your Arm Size and Pulling Strength