Cable Curl

What is the Cable Curl?

The cable curl trains the biceps against the constant tension of a cable stack rather than the variable resistance of a free weight. Because the cable pulls throughout the range, including the bottom stretch and the top squeeze where dumbbells and barbells go light, it keeps the biceps loaded across the whole rep.

Muscles worked

Primary: Biceps

The biceps brachii is the sole target, flexing the elbow to curl the handle up against a cable that never lets tension drop off through the range.

How to perform the Cable Curl

1. Attach a straight bar to a low pulley and grip it shoulder-width with a supinated grip, standing a step back so the cable line stays taut at the bottom.
2. The key advantage over free weights is constant tension: the cable keeps loading the biceps even at the fully extended bottom position, so do not let it go slack.
3. Brace the core and pin the elbows to the sides, then curl the bar up by flexing the elbows.
4. Drive to peak contraction where the cable pulls hardest through the mid-range, squeezing without swaying.
5. Lower the bar under control against the constant cable tension rather than letting the stack yank the arms down.
6. Stop just short of the weight stack touching down so tension is never released between reps.

Suggested working range: 10–15 reps. Default progression: double progression.

Mechanics

A single-joint isolation performed against a low cable: pure elbow flexion with the upper arms fixed at the sides. Unlike a free weight, the cable line keeps resistance nearly constant from the stretched bottom to the peak contraction.

Form cues

• •Stand a step back from the stack so the cable pulls at a slight forward angle and keeps tension at the top.
• •Keep the elbows pinned to your sides and curl by bending only the elbow.
• •Squeeze the biceps hard at the top where the cable keeps loading the muscle.
• •Resist the cable on the way down to a full stretch instead of letting it snap back.

Common mistakes

• •Standing too close so the cable goes slack at the bottom and tension is lost.
• •Leaning the torso back to use bodyweight as a counterweight to drag the bar down.
• •Letting the stack yank the arms back down instead of controlling the eccentric.
• •Letting the elbows drift forward at the top, collapsing the constant-tension advantage.

Variations & alternatives

• •Barbell curl, a free-weight version for the simplest progressive overload.
• •Bayesian cable curl: facing away with the arm behind the body to add stretch.
• •Cable hammer curl, a neutral rope grip that brings in the brachialis and forearm.
• •Overhead cable curl, arms out to the sides for a strong peak contraction.

Barbell Curl

Biceps · Barbell

Dumbbell Curl

Biceps · Dumbbell

Hammer Curl

Biceps · Dumbbell

Incline Dumbbell Curl

Biceps · Dumbbell

Concentration Curl

Biceps · Dumbbell

Programming: sets, reps & when to use it

Use the cable curl as a biceps accessory in the library’s 10–15 rep range, where the constant tension and a clean squeeze matter more than heavy load. It pairs well as a finisher after free-weight curls, and the smooth resistance lets you push close to failure safely. Two to four sets is plenty.

Frequently asked questions