Palms-Down Dumbbell Wrist Curl Over A Bench
This is a seated forearm exercise where you rest your forearms on a bench with your palms facing down and your wrists hanging just past the edge, then lift the dumbbells using only your wrists. It isolates the extensor muscles on top of your forearm, the ones that lift your hand and knuckles, rather than the flexors most grip work already trains. It's a simple, low-skill accessory move that suits beginners and anyone who wants more balanced forearm strength.
Why it works
Resting your forearms flat on the bench locks your elbows and upper arms in place, so the only joint left to move is the wrist. That isolation forces the wrist extensors on the back of your forearm to do all the lifting instead of letting your biceps or shoulders sneak into the movement. Most grip and pulling exercises train the flexor side of the forearm far more than the extensor side, and that imbalance is a common source of nagging elbow discomfort, so this move fills a gap that curls and rows leave open.
Set up
- Sit on the end of a bench holding a dumbbell in each hand, or one hand at a time.
- Rest your forearms on your thighs or the bench, palms facing down, with your wrists and hands hanging just past your knees.
- Let the dumbbells hang at the bottom of your wrist's range before starting.
How to do it
- Start with your wrists relaxed and bent downward, dumbbells hanging low.
- Keeping your forearms pressed flat against your thighs or the bench, lift the dumbbells by bending your wrists upward.
- Rise as high as your wrist can comfortably go without lifting your forearms off the support.
- Pause briefly at the top of the movement.
- Lower the dumbbells slowly back to the starting position.
- Let your wrist stretch slightly downward at the bottom before starting the next rep.
Form cues
- Forearms stay glued to the bench or thighs the whole set.
- Only the wrist moves, elbows and shoulders stay still.
- Lower slowly, don't let the dumbbells drop.
- Keep the grip relaxed enough that your forearm, not your fingers, does the work.
Breathing: Exhale as you lift the dumbbells with your wrists, inhale as you lower them back down.
Common mistakes
Letting the forearms lift off the bench to help swing the weight up.
Fix: Press your forearms down into the bench or your thighs for the entire set so only the wrist joint moves.
Using momentum to bounce the dumbbells up instead of a controlled lift.
Fix: Slow the tempo down until you feel the top of the forearm doing the work, not your grip or your arm swinging.
Picking a weight so heavy that the range of motion shrinks to a few inches.
Fix: Drop to a lighter dumbbell that lets your wrist move through its full range on every rep.
How to program it
- Because this isolates a small muscle group with light loads, two or three sessions a week works fine for most people, even alongside heavier upper-body training days.
- Two to three sets of 12 to 15 reps per arm is a reasonable starting range, since the wrist extensors respond well to higher reps.
- Slot it in near the end of an arm or pull day, after your grip has already been taxed by rows or curls.
Safety notes
- Stop if you feel sharp pain on the outside of your elbow rather than muscle fatigue in the forearm; that area is prone to irritation from overuse.
- Warm up with a few reps at very light weight before loading up, since the wrist tendons take longer to warm up than larger muscle groups.
Exercise profile
- Force
- Pull
- Mechanics
- Isolation
- Category
- Strength
Frequently asked questions
How many sets and reps of palms-down wrist curls should I do?
Two or three sets of 12 to 15 reps per arm is a good starting point. The forearm extensors handle higher reps well, so there's no need to go heavy.
What muscles does the palms-down wrist curl work?
It targets the wrist extensors, the muscles on top of your forearm that lift your hand and knuckles. That's different from a standard wrist curl, which works the flexors underneath.
Can I do this without a bench?
Yes. Resting your forearms on your thighs while seated works just as well as using a bench; the bench is just a comfortable, stable surface.
Why do my forearms feel tight after a heavy grip session?
Grip-heavy training loads the flexor side of the forearm far more than the extensor side. Adding palms-down wrist curls helps balance that out and can ease some of that tightness over time.