How to Do Preacher Hammer Dumbbell Curl
Start and end of one clean rep of Preacher Hammer Dumbbell Curl.
Quick facts
| Primary muscle | Biceps |
|---|---|
| Secondary muscles | Forearms |
| Equipment | Dumbbell |
| Category | Strength |
How to perform Preacher Hammer Dumbbell Curl
- Place the upper part of both arms on top of the preacher bench as you hold a dumbbell in each hand with the palms facing each other (neutral grip).
- As you breathe in, slowly lower the dumbbells 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 dumbbells are at shoulder height.
- Squeeze the biceps hard for a second at the contracted position and repeat for the recommended amount of repetitions.
Muscles worked
- Biceps (primary): bends the elbow and turns the palm up during pulls and curls.
- Forearms (secondary): controls your grip and keeps the wrist steady under load.
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.
- Control the lowering phase — a 2–3 second descent builds more than dropping the weight.
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 Preacher Hammer Dumbbell Curl work?
Preacher Hammer Dumbbell Curl mainly works the biceps, with the forearms helping as secondary movers.
What equipment do I need for Preacher Hammer Dumbbell Curl?
Preacher Hammer Dumbbell Curl needs a pair of dumbbells.
How many sets and reps should I do for Preacher Hammer Dumbbell 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.
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