Cable Biceps Curl
The cable biceps curl provides constant tension throughout the entire range of motion, unlike free weights where tension varies. This continuous resistance creates an incredible pump and maximizes time under tension, making it perfect for finishing your arm workout and chasing hypertrophy.
Muscles Worked
Primary Muscles
- Biceps Brachii
- Brachialis
Secondary Muscles
- Brachioradialis
- Forearm Flexors
- Core Stabilizers
How to Perform
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1
Setup: Set the cable pulley to the lowest position and attach a straight bar or EZ-bar attachment. Stand facing the machine about 1-2 feet back from the pulley, feet shoulder-width apart. Grip the bar with an underhand grip at shoulder-width, arms fully extended with the cable taut.
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2
Body Position: Keep your chest up, shoulders back, and core braced. Pin your elbows firmly to your sides and keep them there—they shouldn't move at all. Stand upright with a slight backward lean (about 5-10 degrees) to maintain constant tension on the cable throughout the movement.
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3
The Curl: Curl the bar up toward your shoulders in a smooth arc, keeping your upper arms stationary. Squeeze your biceps hard as you lift. The constant cable tension means your biceps work equally hard through the entire range, especially at the top where dumbbells and barbells lose tension.
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4
Peak Squeeze: At the top, the bar should be near your upper chest with forearms nearly vertical. Hold this position for 1-2 seconds and contract your biceps as hard as possible. This constant tension at full contraction is what makes cables special—embrace the burn.
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5
Controlled Release: Lower the bar slowly back to the starting position over 2-3 seconds, resisting the cable's pull the entire way. Never let the weight stack crash down—maintain control. The cable keeps tension even at the bottom, so there's no rest between reps. This non-stop tension produces epic pumps.
Common Mistakes
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Standing Too Close to Machine
If you're too close, the cable angle removes tension at the top of the curl. Stand back 1-2 feet so the cable pulls at an angle throughout the entire movement. This ensures your biceps work hard from start to finish with no dead zones.
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Using Too Much Weight
Cable curls are about constant tension and perfect form, not ego lifting. If you're swinging or using momentum, drop the weight. Focus on controlled reps with a 2-second concentric, 1-second squeeze, and 3-second eccentric for maximum muscle growth.
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Letting Weight Stack Rest
Allowing the weight plates to touch down between reps releases all tension from your biceps. Keep constant tension by stopping just before the stack touches. Your biceps should never get a break during the set—that's the beauty of cables.
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Elbows Drifting Forward
When your elbows move forward as you curl, your front delts take over and your biceps lose isolation. Lock your elbows in place against your ribs. Imagine they're pinned to a wall—only your forearms should move during cable curls.
Pro Tips
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Try Different Attachments
Straight bar, EZ-bar, rope, and single handles all hit your biceps slightly differently. The rope attachment allows more supination at the top for a better peak contraction. Single handles let you work one arm at a time for improved focus and balance.
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Perfect for 21s Protocol
Cable curls are ideal for the classic 21s protocol: 7 reps bottom half, 7 reps top half, 7 full reps without rest. The constant cable tension makes this brutal but incredibly effective. Your biceps will be screaming by rep 21.
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High Pulley Variation
Set the pulley to the highest position and curl down toward your forehead while keeping elbows high. This high cable curl hits the long head of your biceps from a unique angle and creates an insane peak contraction you can't get anywhere else.
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Finish Your Workout with Cables
Save cable curls for the end of your bicep workout when you're already fatigued. The constant tension and reduced joint stress let you squeeze out extra reps for a nasty pump. Use higher reps (12-20) and shorter rest periods for maximum metabolic stress.
Variations
Rope Cable Curl
Use rope attachment for neutral grip and maximum supination at the top.
High Cable Curl
Set pulley high and curl down for unique angle targeting the long head.
Single-Arm Cable Curl
Isolate one arm at a time for better mind-muscle connection and balance.
Cable 21s
7 bottom-half reps, 7 top-half reps, 7 full reps for brutal pump.
Alternatives
Dumbbell Curl
Free weight alternative allowing natural movement and supination.
Barbell Curl
Classic bicep builder for maximum weight and bilateral strength.
Preacher Curl
Eliminates momentum for strict isolation and lower bicep emphasis.
Related Arm Exercises
Track Your Cable Curl Progress
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