Cable One Arm Wrist Curl

1. Attach a single D handle to the lowest pulley and place a flat bench in front of the machine.
2. Sit or kneel so the forearm rests along the bench with the wrist and hand hanging off the edge, palm up.
3. Grab the handle with a loose underhand grip and let the wrist extend so the handle rolls toward the fingers.
4. Curl the wrist upward by flexing the forearm until the knuckles point to the ceiling.
5. Squeeze for one second at the top, keeping the forearm flat on the bench.
6. Lower slowly over 2 to 3 seconds, letting the wrist extend fully under cable tension.
7. Complete all reps on one side, then switch hands and match the rep count exactly.

Common Mistakes

• Lifting the forearm off the bench: When the load is too heavy the elbow and biceps lift the forearm to help. Press the forearm into the bench and reduce the weight until only the wrist moves.
• Loading too heavy: Forearm flexors respond to volume and range, not maximal load. Use 5 to 7.5 kg and build reps before adding plates.
• Cutting the bottom range: Keeping the wrist stiff at the bottom skips the stretched position. Let the handle roll toward the fingers and the wrist extend fully each rep.

Programming Tips

Use 2 to 3 sets of 12 to 20 reps per arm at the end of an arm, pull or full body session. It is a small isolation exercise for the forearm flexors, so it belongs last, after anything that needs grip strength. Pair it with a reverse wrist curl for the extensors to keep the forearm balanced.

Set the pulley low, rest the forearm fully on the bench with the wrist past the edge and let the handle settle into the fingers before the first rep. A realistic start is 5 to 7.5 kg, progressing by 1.25 kg when 20 reps feel controlled with the forearm still. The single most common fault is the forearm lifting off the bench to help; fix it by pinning the forearm with the free hand and lowering the load.

Common Questions

What does the cable wrist curl work?

It works the wrist and finger flexors on the palm side of the forearm, which drive grip strength and forearm size. The biceps is not meaningfully involved when the forearm stays on the bench.

How much weight should I use for one arm wrist curls?

Start at 5 to 7.5 kg and work up to 10 to 15 kg for sets of 15. The muscles are small and the lever is short, so loads stay light compared with other arm exercises.

Cable wrist curl vs dumbbell wrist curl, which is better?

The cable keeps tension on the forearm at the top of the rep and makes small weight jumps easy, which suits high rep work. Dumbbells are more available and let you train both arms at once, so use whichever you can do consistently.

How often should I train forearms?

Two to three times per week with 4 to 8 total sets is plenty, since the forearms also work in every pull and carry. Add direct work only if grip or forearm size is a specific weakness.