How to Do One Arm Dumbbell Preacher Curl
Start and end of one clean rep of One Arm Dumbbell Preacher Curl.
Quick facts
| Primary muscle | Biceps |
|---|---|
| Secondary muscles | — |
| Equipment | Dumbbell |
| Category | Strength |
How to perform One Arm Dumbbell Preacher Curl
- Grab a dumbbell with the right arm and place the upper arm on top of the preacher bench or the incline bench. The dumbbell should be held at shoulder length. This will be your starting position.
- As you breathe in, slowly lower the dumbbell until your upper arm is extended and the biceps is fully stretched.
- As you exhale, use the biceps to curl the weight up until your biceps is fully contracted and the dumbbell is at shoulder height. Again, remember that to ensure full contraction you need to bring that small finger higher than the thumb.
- Squeeze the biceps hard for a second at the contracted position and repeat for the recommended amount of repetitions.
- Switch arms and repeat the movement.
Muscles worked
- Biceps (primary): bends the elbow and turns the palm up during pulls and curls.
Sets & reps by goal
| Goal | Sets × reps | Load | Rest |
|---|---|---|---|
| Strength | 3–5 × 3–5 | Heavy (~85%+) | 2–3 min |
| Hypertrophy | 3–4 × 8–12 | Moderate (~65–75%) | 60–90 s |
| Endurance | 2–3 × 15–20 | Lighter (~50–60%) | 30–45 s |
Pick the row that matches your goal. If you're newer, anchor in the hypertrophy range while you groove the form.
Form tips
- Keep the upper arm still and pinned to your side so the movement happens only at the elbow.
- Each side works on its own, so match the depth and speed of both arms and don't let the stronger side take over.
- Treat every rep the same — a repeatable setup and bar path is what lets you add weight safely over time.
- Breathe out on the effort and in on the return, keeping one steady rhythm across the set.
Common mistakes
- Swinging the torso to fling the weight up instead of actually curling it.
- Letting the dumbbells drift apart or clang together at the top instead of controlling the path.
- Chasing weight jumps before the current load feels solid on every rep.
Frequently asked questions
What muscles does One Arm Dumbbell Preacher Curl work?
One Arm Dumbbell Preacher Curl is a focused movement that primarily works the biceps.
What equipment do I need for One Arm Dumbbell Preacher Curl?
One Arm Dumbbell Preacher Curl needs a pair of dumbbells.
How many sets and reps should I do for One Arm Dumbbell Preacher Curl?
It depends on your goal: about 3–5 sets of 3–5 heavy reps for strength, 3–4 sets of 8–12 for muscle growth, or 2–3 sets of 15–20 for endurance. Pick the row that matches your goal. If you're newer, anchor in the hypertrophy range while you groove the form.
Train One Arm Dumbbell Preacher Curl with a coach in your pocket
Gimmy is your AI gym buddy — it programs One Arm Dumbbell Preacher Curl into recovery-aware workouts, tracks your sets, and shows one score that tells you if it's working.
Get early access