Is the cable version better than using dumbbells or a barbell?

Not better, just different. The cable gives a smooth pull and an easy way to change the weight, while the Dumbbell Palms-Up Wrist Curl lets each wrist work on its own and the Barbell Palms-Up Wrist Curl needs no machine, so use whichever setup you have.

Why can I lift more palms-up than palms-down?

The wrist flexors on the palm side are a larger, stronger group than the extensors on the back of the forearm, so a heavier stack setting is normal here. Keep the Cable Palms-Down Wrist Curl in your program too, so the weaker side is not left behind.

Will wrist curls improve my grip strength?

Partly. The finger flexors that close the hand only hold the bar here, so wrist curls build wrist strength more than crushing grip, and holds such as the Dead Hang or the Dumbbell Farmers Carry train grip more directly.

How many sets and reps should I do?

Two to three sets of 12 to 20 controlled reps, once or twice a week, is enough for most people. Choose a weight that lets you finish every rep with the forearms flat on the thighs.

Should I do this with wrist or elbow pain?

Not through sharp or worsening pain, especially at the inner elbow where the wrist flexors attach. Get it checked, and if you have an injury, let a healthcare professional set the load and timing.

Cable Palms-Up Wrist Curl

What Is the Cable Palms-Up Wrist Curl?

Cable Palms-Up Wrist Curl is an isolation exercise that primarily targets the forearms, specifically the wrist flexors on the palm side of the forearm. It is a beginner-level movement done seated on the end of a flat bench in front of a low pulley, holding a straight bar palms up with the forearms resting on the thighs so that only the wrists move.

The wrist flexors bend the palm toward the forearm and work alongside the finger flexors whenever you grip, carry or pull. Rows, pull-ups and carries load them mostly as stabilizers while the hands hold on, so direct work is the main way to train wrist flexion through its full range. That is why this exercise usually sits at the end of an arm or pulling session, often paired with the Cable Palms-Down Wrist Curl so both sides of the forearm get trained.

The flexor carpi radialis and flexor carpi ulnaris do most of the work, with the finger flexors helping as they hold the bar. The cable version differs from the Dumbbell Palms-Up Wrist Curl and the Barbell Palms-Up Wrist Curl mainly in how the load is delivered. The cable gives a smooth, steady pull from the pulley, and the pin-selected stack makes it simple to start light and change the weight quickly. Both hands share one bar, so the stronger side can quietly do more of the work; the dumbbell version lets each wrist work on its own.

This exercise suits beginners, lifters who want bigger forearms and people who grip a lot in climbing, racket sports or manual work. The flexors are the stronger side of the forearm, so the working weight is noticeably heavier than for palms-down wrist curls. Wrist curls build wrist strength more than crushing grip, so pair them with holds such as the Dead Hang or the Dumbbell Farmers Carry if grip is the goal. If even the lightest stack setting is too much, the Band Palms-Up Wrist Curl is an easier place to start.

Muscles Worked

MuscleActivation

Flexor Carpi Radialis: Primary
Flexor Carpi Ulnaris: Primary
Brachioradialis: Minimal
Extensor Carpi Radialis: Minimal

Instructions

Attach a short straight bar to a low pulley and set a flat bench close in front of the machine.
Sit on the end of the bench facing the pulley, feet flat on the floor about hip-width apart.
Take the bar with an underhand grip, palms facing up, hands about hip-width apart.
Lean forward and rest your forearms on your thighs so your wrists and hands hang just past your knees, with the cable taut.
Let your wrists bend back so the bar lowers toward the floor and you feel a stretch along the inside of your forearms.
Curl the bar up as high as is comfortable by bending your wrists, keeping your forearms flat on your thighs.
Pause briefly at the top.
Lower the bar slowly to the start without letting the weight rest on the stack.
Repeat for the desired reps, then return the bar to the pulley under control.

Common Mistakes

Lifting the forearms off the thighs
Raising the forearms or elbows to help the bar up turns the rep into an arm movement and takes the work away from the wrists.
Bouncing out of the bottom
Dropping fast into the stretch and jerking the bar back up swaps muscle work for momentum and loads the wrist at its most stretched point.
Setting the stack too heavy
A weight the wrists cannot curl through the full range shortens every rep and pulls the forearms off the thighs.
Letting the cable go slack
If the weight rests on the stack at the bottom of the rep, the wrists get no load there, so set the bench where the cable stays taut.
Cutting the range short
Lower until the wrists bend back comfortably and curl the bar as high as you can without lifting the forearms, rather than flicking through the middle.

Injuries

Cable Palms-Up Wrist Curl is a low risk exercise when performed with proper technique. The forearms are supported and the range is small, but the wrist flexors share a tendon at the inside of the elbow, the spot affected in golfer's elbow. Too much weight, high volume added too quickly or letting the stack yank the wrists back into the stretched position can irritate that tendon or the front of the wrist.

Start with a stack setting you can curl through the full range with the forearms flat on the thighs, and lower every rep slowly. Pick the bar up from the pulley and return the stack under control rather than letting it drop, so the wrists are never jerked into a bent-back position. Training the palms-down side as well keeps the forearm work balanced.

To make it easier, drop the stack, work one hand at a time or switch to the Band Palms-Up Wrist Curl. To progress, add weight in the smallest steps the stack allows, pause at the top or slow the lowering phase. Stop if you feel sharp pain at the inner elbow or the palm side of the wrist, or any numbness or tingling in the hand, and get existing elbow or wrist pain checked by a healthcare professional before loading it.

Overview

Primary Focus: Forearms
Equipment: Cable and bench
Modality: Strength
Difficulty: Beginner

Alternative Exercises

Frequently Asked Questions

Q: Is the cable version better than using dumbbells or a barbell?: Not better, just different. The cable gives a smooth pull and an easy way to change the weight, while the Dumbbell Palms-Up Wrist Curl lets each wrist work on its own and the Barbell Palms-Up Wrist Curl needs no machine, so use whichever setup you have.
Q: Why can I lift more palms-up than palms-down?: The wrist flexors on the palm side are a larger, stronger group than the extensors on the back of the forearm, so a heavier stack setting is normal here. Keep the Cable Palms-Down Wrist Curl in your program too, so the weaker side is not left behind.
Q: Will wrist curls improve my grip strength?: Partly. The finger flexors that close the hand only hold the bar here, so wrist curls build wrist strength more than crushing grip, and holds such as the Dead Hang or the Dumbbell Farmers Carry train grip more directly.
Q: How many sets and reps should I do?: Two to three sets of 12 to 20 controlled reps, once or twice a week, is enough for most people. Choose a weight that lets you finish every rep with the forearms flat on the thighs.
Q: Should I do this with wrist or elbow pain?: Not through sharp or worsening pain, especially at the inner elbow where the wrist flexors attach. Get it checked, and if you have an injury, let a healthcare professional set the load and timing.