Seated One-Arm Dumbbell Palms-Down Wrist Curl
The seated one-arm dumbbell palms-down wrist curl trains the muscles on the top of your forearm, the wrist extensors, by lifting a light dumbbell using only your wrist while your palm faces the floor. It is the reverse of the more common palms-up wrist curl, and most lifters need noticeably less weight for it, since the extensors are smaller and weaker than the flexors on the underside of the forearm. Training one arm at a time lets you match the load and range to each wrist individually.
Why it works
Your forearm has two opposing muscle groups: flexors on the palm side that curl the wrist down, and extensors on the back side that lift it up. Most grip-focused training, from deadlifts to pull-ups, biases the flexors heavily, so the extensors are often the weaker, more neglected half of the forearm. Resting your forearm on your thigh with your palm down and lifting the dumbbell using only your wrist isolates that extensor group directly, without your fingers, elbow, or shoulder getting involved.
Set up
- Sit on a bench and rest your forearm along your thigh, palm facing down, wrist and hand hanging just past your knee.
- Hold a light dumbbell with your fingers wrapped loosely around the handle.
- Brace your forearm against your thigh so only your wrist moves.
- Start with your wrist relaxed and slightly bent downward.
How to do it
- Lift the back of your hand up as high as your wrist allows, keeping your forearm pinned to your thigh.
- Pause briefly at the top of the lift.
- Lower the dumbbell back down slowly, letting your wrist bend past neutral into a light stretch.
- Keep the motion isolated to the wrist; do not let your forearm roll or your elbow bend.
- Complete all reps on one side, then switch arms.
Form cues
- Forearm stays pinned to your thigh the whole rep.
- Lift with the wrist only, not the fingers or elbow.
- Pause briefly at the top of each rep.
- Lower slowly into the stretch.
Breathing: Exhale as you lift the back of your hand up, inhale as you lower it back down.
Common mistakes
Using too much weight and swinging the forearm to help lift it.
Fix: Drop the weight until your forearm can stay completely still against your thigh for the full set.
Rushing through reps without pausing at the top.
Fix: Hold the top position for a full second so the extensors do the work instead of momentum.
Letting the wrist drop too fast on the way down.
Fix: Lower the dumbbell on a slow two-count instead of letting gravity snap the wrist down.
Gripping the dumbbell too tightly with the fingers.
Fix: Keep a loose, relaxed grip so your fingers are not compensating for the wrist extensors.
How to program it
- This is a small, single-joint muscle group, so keep the weight light and build up slowly rather than chasing heavier dumbbells quickly.
- Two or three sets of 12 to 15 reps per arm, two or three times a week, is enough for most people since it is isolation work on a small muscle group.
- Give the extensors at least a day of rest between sessions early on; they fatigue and tighten faster than most lifters expect from such a light exercise.
- If you also train the palms-up version, do the extensor work first while your wrist is fresh, since the extensors are the weaker half of the pair.
Safety notes
- Start with a lighter dumbbell than you would guess; the wrist extensors are a small muscle group and overloading them can aggravate the tendons near your elbow.
- Stop the set if you feel sharp pain on the outside of your elbow rather than pushing through it.
Exercise profile
- Force
- Pull
- Mechanics
- Isolation
- Category
- Strength
Frequently asked questions
How much weight should I use for the palms-down wrist curl?
Start lighter than feels necessary, often just 2 to 5 kilograms per hand. The wrist extensors are small and weak compared to the flexors, and using a similar weight to your palms-up curl usually means the load is too heavy.
Why is this exercise also called a reverse wrist curl?
Because the palm faces down instead of up, the motion runs in the opposite direction of a standard wrist curl, working the extensors on the back of the forearm instead of the flexors underneath.
What can I do if I do not have dumbbells at home?
A cable wrist curl at a low pulley works the same motion with adjustable resistance if a gym cable station is available.
Why does the outside of my elbow hurt after wrist curls?
That usually means the extensor tendons near your elbow are working harder than they are ready for. Lower the weight and shorten your range of motion, and stop the exercise if sharp pain continues.