One Arm Cable Curl

Exercise / Biceps

Overview

The One Arm Cable Curl is a unilateral isolation exercise that targets the biceps brachii with continuous resistance from a cable machine. By using a cable machine with a single handle attachment, it delivers smooth resistance both during the concentric (lifting) and eccentric (lowering) phases. This makes it especially effective for focused bicep work and correcting muscle imbalances. (for example, if one bicep is bigger than another)

How to Perform the One Arm Cable Curl

Begin by attaching a single-handled cable attachment to the lowest setting on a cable machine.
Stand with your back facing the cable machine, feet shoulder-width apart, and knees slightly bent.
Grasp the handle with an underhand grip (palm facing up) and stand far enough away from the cable machine so that your arm is fully extended and there is tension on the cable.
Keeping your elbow tucked in at your side, exhale and curl the handle toward your shoulder, contracting your bicep muscles.
Hold the contraction for a second, then inhale and slowly lower the handle back down to the starting position, keeping tension on the cable.
Repeat for the desired number of reps, then switch arms and repeat.

Tips for Proper Form

Keep your elbow fixed near your rib cage; do not let it drift forward.
Avoid swinging or using body momentum to lift the weight.
Maintain a neutral wrist position for smooth cable movement.
Focus on controlled eccentric lowering to maximize muscle engagement.
Adjust the pulley height to maintain a comfortable resistance angle.

Common Mistakes to Avoid

Allowing the shoulder to roll forward or the elbow to move away from the body.
Using too much weight, which reduces control and increases joint strain.
Jerking or swinging the torso to assist the lift.
Failing to fully extend the arm at the bottom of the rep, reducing range of motion.

Benefits of the One Arm Cable Curl

Incorporating one-arm cable curls into your arm workout routine can provide a wide range of benefits for your biceps and overall arm development. Here are some of the advantages of adding one-arm cable curls to your training regimen:

Improved Muscle Symmetry: Isolating one arm at a time helps correct strength imbalances and ensures even muscle growth.
Constant Tension Throughout Movement: The cable provides resistance through both the upward and downward phases, enhancing total muscle activation.
Joint-Friendly Resistance Path: Smooth cable tension reduces joint stress compared to heavy barbell curls, making it ideal for longevity training.
Versatile and Adjustable: Easily adaptable for beginners or advanced lifters by adjusting pulley height, grip, or resistance level.
Aesthetic Arm Definition: Continuous tension promotes hypertrophy and vascularity for more sculpted arms.

How to Incorporate Into Your Routine

The One Arm Cable Curl can be used in a variety of workout programs depending on your training goal:

For Beginners: 2–3 sets of 10–12 reps per arm with light weight to learn proper control.
For Hypertrophy: 3–4 sets of 10–15 reps with moderate resistance and slow eccentrics.
For Strength: 4 sets of 6–8 reps focusing on heavier loads with perfect form.
For General Fitness: Perform as an accessory movement after compound lifts for balanced arm development.

One Arm Cable Curl: Muscles Worked

Target - Biceps

Synergists - Brachialis

Synergists - Brachioradialis

Stabilizers - Wrist Flexors

Should I perform both arms simultaneously or separately?

Perform them separately to maximize focus on each arm and prevent imbalances.

What pulley height is best for this exercise?

Use the lowest pulley setting for a traditional curl motion that fully engages the biceps.

Is the One Arm Cable Curl better than a Dumbbell Curl?

It offers constant tension, unlike dumbbells, which lose resistance at certain points. Both are beneficial, so alternating between them is ideal.

How often should I train biceps with cable curls?

1–2 times per week is sufficient for most individuals, depending on recovery and total training volume.

Can beginners safely perform this exercise?

Yes, the cable system allows controlled movement, making it beginner-friendly when light resistance is used.

What’s the ideal rest time between sets?

Rest 45–60 seconds between hypertrophy sets and 90 seconds for strength-focused sets.

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