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How to do it
- Sit on a bench with your forearm flat on the top, palm facing down, and your wrist hanging just past the edge.
- Hold a light dumbbell and let your wrist drop fully so the weight pulls your hand down toward the floor.
- Lift the dumbbell by extending your wrist upward, keeping your forearm completely still on the bench.
- Squeeze the top of the forearm at peak contraction with the back of your hand pulled toward your forearm.
- Lower the dumbbell back down slowly over 2 to 3 seconds, fighting the weight on the way down.
- Repeat for 12 to 15 reps, then switch arms and match the rep count on the other side.
Common mistakes
- Picking a weight too heavy, which forces you to use the elbow or shoulder to swing the dumbbell up.
- Lifting only a few inches at the top instead of working through the full wrist range.
- Letting the forearm drift up off the bench, which removes the isolation entirely.
- Rushing the lowering phase, where most of the forearm extensor strength is built.
Muscles worked
- Primary
- Forearms
Good to know
- What muscles does the Dumbbell Wrist Extension work?
- Mainly the forearms.
- What equipment do you need for the Dumbbell Wrist Extension?
- It uses dumbbells. Without it, the Barbell Wrist Curl and the Cable Wrist Curl train the same muscles the same way.
- Is the Dumbbell Wrist Extension good for beginners?
- GymVim rates it beginner.