Cable Curls (How To, Muscles Worked, Benefits)

The Cable Curl is a classic arm exercise that builds strength and size in the biceps while keeping constant tension throughout the entire range of motion.

Using a cable machine allows for smooth resistance and better control compared to free weights, making it great for muscle activation and isolation.

Primary Muscles Worked: Biceps Brachii
Secondary Muscles Worked: Brachialis, Forearms
Equipment Needed: Cable Machine with Straight Bar, EZ Bar, or Rope Attachment

How To Do Cable Curls

Step-by-Step Instructions

Set-Up:
- Attach a straight bar, EZ bar, or rope handle to the low pulley of a cable machine.
- Stand facing the stack and grab the attachment with an underhand (palms-up) grip.
- Step back slightly to create tension, standing tall with your arms fully extended and elbows close to your sides.
Execution:
- Curl the handle upward toward your shoulders, keeping your elbows stationary.
- Squeeze your biceps at the top of the movement.
- Slowly lower the handle back to the starting position under control.
- Repeat for the desired number of reps.
Tips for Proper Form:
- Keep your elbows tucked close to your torso.
- Move only at the elbow (avoid swinging or leaning).
- Maintain steady tension from start to finish.

Key Benefits

Provides continuous tension on the biceps throughout the lift.
Enhances muscle activation and control.
Smooth, joint-friendly motion ideal for high-rep work.
Great for finishing or accessory arm training.

Modifications and Variations

Easier Option:
- Use lighter weight and focus on form and contraction.
- Perform one arm at a time using a single handle attachment.
Harder Option:
- Use a slower tempo (3–4 seconds lowering).
- Pause at the top for 1–2 seconds for added tension.
- Try high cable curls (facing away from the stack) for constant tension at peak contraction.

Common Mistakes

Swinging the Weight: Keep movement slow and controlled, don’t use momentum.
Elbows Drifting Forward: Keep them locked by your sides.
Leaning Back: Maintain upright posture to isolate the biceps.
Rushing Reps: Focus on the squeeze and control at both ends of the rep.

Reps and Sets Recommendations

For Strength: 3–4 sets of 6–8 reps.
For Hypertrophy: 3–4 sets of 10–12 controlled reps.
For Finisher or Pump Work: 2–3 sets of 15–20 lighter, continuous reps.

Cable Curl Alternatives

Don’t have access to a cable machine and need an alternative? Here are a couple of exercises that you may be able to use as a substitution.

Need more options? Here are my 11 favorite alternatives for Cable Curls.

Barbell Curls

If you don’t a cable machine, don’t worry, Barbell Curls are a perfect (some would even say better) alternative to their cable cousin.

Stand tall, grip the bar shoulder-width apart, keep elbows tucked and curl the bar up to shoulder level. Slowly lower back to the starting position and repeat for the desired number of reps.

Band Curls

If barbell curls bother your wrist or elbow, you may be able to give Band Curls a try.

Stand on one end of a resistance band and grab the other end with both hands. With Band Curls, you can use more of a neutral grip by keeping your palms facing each other.

Sometimes this type of grip (also similar to the grip used in hammer curls) can be less stressful on the wrist and/or elbow.