Exercise
Hammer Curls: How to Do It, Muscles Worked
The Hammer Curls is a beginner-level strength exercise that primarily works the biceps. It uses dumbbell, and is performed in 5 steps, following the form cues, common mistakes and sets/reps guidance below.
What muscles does the Hammer Curls work?
The Hammer Curls primarily targets the biceps, with no listed secondary muscles in the dataset. It's classified as a beginner-level strength movement using dumbbell.
What are the most common Hammer Curls mistakes?
- Letting the elbow drift instead of keeping it in a fixed position through the set.
- Cutting the rep short at the top or bottom instead of using the full stretch and contraction.
- Speeding through the eccentric (lowering) phase instead of controlling it.
- Swinging the weight with body momentum instead of moving it under muscular control.
How should I program the Hammer Curls — sets, reps and frequency?
As a single-joint isolation exercise, it responds well to a higher 10-15 reps for 2-4 sets, usually taken close to muscular failure. It tolerates higher frequency than a heavy compound lift — twice a week for the same muscle group is common. Add small amounts of weight or an extra rep once every working set can be completed with good form — the same progressive overload principle behind every strength exercise in the library.
What are good Hammer Curls variations and alternatives?
- Concentration Curls — dumbbell, beginner level, biceps
- Dumbbell Bicep Curl — dumbbell, beginner level, biceps
- Incline Dumbbell Curl — dumbbell, beginner level, biceps
- One Arm Dumbbell Preacher Curl — dumbbell, beginner level, biceps
| Attribute | Value |
|---|---|
| Level | Beginner |
| Equipment | Dumbbell |
| Category | Strength |
| Primary muscles | Biceps |
| Secondary muscles | — |
How to do the Hammer Curls, step by step:
- Step 1. Stand up with your torso upright and a dumbbell on each hand being held at arms length. The elbows should be close to the torso.
- Step 2. The palms of the hands should be facing your torso. This will be your starting position.
- Step 3. Now, while holding your upper arm stationary, exhale and curl the weight forward while contracting the biceps. Continue to raise the weight until the biceps are fully contracted and the dumbbell is at shoulder level. Hold the contracted position for a brief moment as you squeeze the biceps. Tip: Focus on keeping the elbow stationary and only moving your forearm.
- Step 4. After the brief pause, inhale and slowly begin the lower the dumbbells back down to the starting position.
- Step 5. Repeat for the recommended amount of repetitions.
Key takeaways
- The Hammer Curls is a beginner-level strength exercise using dumbbell.
- Primary muscles worked: Biceps.
- A typical working range is 10-15 reps for 2-4 sets, usually taken close to muscular failure.
- The most common technical fault is letting the elbow drift instead of keeping it in a fixed position through the set.
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Try IRONSLOG freeFrequently asked questions
Is the Hammer Curls suitable for beginners?
Yes — the dataset lists the Hammer Curls as a beginner-level movement, though anyone new to training should still start with light weight (or no added weight) to learn the pattern first.
What equipment do I need for the Hammer Curls?
A dumbbell. No other equipment is required for the standard version of this movement.
What's the difference between the primary and secondary muscles listed?
Primary muscles (Biceps) do most of the work and are usually the limiting factor in the set. Secondary muscles assist or stabilize but aren't the main driver of the movement.