How to Do Alternate Hammer Curl
Start and end of one clean rep of Alternate Hammer Curl.
Quick facts
| Primary muscle | Biceps |
|---|---|
| Secondary muscles | Forearms |
| Equipment | Dumbbell |
| Category | Strength |
How to perform Alternate Hammer Curl
- Stand up with your torso upright and a dumbbell in each hand being held at arms length. The elbows should be close to the torso.
- The palms of the hands should be facing your torso. This will be your starting position.
- While holding the upper arm stationary, curl the right weight forward while contracting the biceps as you breathe out. Continue the movement until your biceps is fully contracted and the dumbbells are at shoulder level. Hold the contracted position for a second as you squeeze the biceps. Tip: Only the forearms should move.
- Slowly begin to bring the dumbbells back to starting position as your breathe in.
- Repeat the movement with the left hand. This equals one repetition.
- Continue alternating in this manner 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.
- Warm up the pattern with a couple of lighter, submaximal sets before your working sets.
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 Alternate Hammer Curl work?
Alternate Hammer Curl mainly works the biceps, with the forearms helping as secondary movers.
What equipment do I need for Alternate Hammer Curl?
Alternate Hammer Curl needs a pair of dumbbells.
How many sets and reps should I do for Alternate Hammer 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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