# Alternating Dumbbell Curl

An alternating dumbbell curl targeting the biceps and forearms. Useful for arm hypertrophy while letting each side work independently.

- Beginner · Isolation
- Equipment: Dumbbells
- HD video: https://media.seto.fit/exercises/dumbbell-curls-alternating/video/male.mp4
- HTML: https://seto.fit/exercises/dumbbell-curl-alternating/

## Muscles worked

- Biceps: 10/10
- Forearms: 6/10

## How to do the Alternating Dumbbell Curl

1. Stand tall, holding a dumbbell in each hand, palms facing your thighs.
2. Curl one dumbbell up toward your shoulder, turning your palm up and keeping your elbow still.
3. Slowly lower the weight to full elbow extension, then repeat on the other side.

### Full technique — 7 steps

1. Stand tall with a dumbbell in each hand, arms at your sides, and palms facing your thighs.
2. Set your shoulders back and keep your elbows close to your torso.
3. Curl one dumbbell toward the same-side shoulder, turning your palm up, without letting the elbow drift forward.
4. Raise until the forearm is nearly vertical and the biceps fully shorten.
5. Lower that dumbbell back to full elbow extension without swinging your torso.
6. Curl the opposite dumbbell the same way while the first arm stays at your side.
7. Continue alternating sides, keeping each rep smooth and matching the range on both arms.

## Common mistakes

- Swinging the torso to start reps
- Letting elbows drift forward
- Cutting off the bottom range
- Turning it into a hammer curl

## Form cues

- Keep elbows pinned
- Stand tall throughout
- Palms stay up
- Match both sides

## How much to do

- **Strength**: 4–5 sets of 6–8 reps · rest 2 min · 2 reps in reserve · lower 3 s, lift 1 s
- **Muscle growth** (best fit): 3–4 sets of 8–12 reps · rest 1 min 15 s · 2–3 reps in reserve · lower 2 s, lift 2 s
- **Endurance** (good fit): 2–3 sets of 15–20 reps · rest 45 s · 3–4 reps in reserve · lower 2 s, lift 2 s

Reps in reserve: how many more you could still do when you end the set.

## Substitutes by equipment

Same muscles, same movement — pick the version you have the gear for.

- **Barbell**: [Barbell Curl](https://seto.fit/exercises/barbell-curl/), [Single Arm Barbell Curl](https://seto.fit/exercises/single-arm-barbell-curl/)
- **Resistance bands**: [Resistance Band Spider Curl](https://seto.fit/exercises/resistance-band-spider-curl/), [Squatting Resistance Band Curl](https://seto.fit/exercises/squatting-resistance-band-curl/)
- **No equipment**: [EZ Bar Spider Curl](https://seto.fit/exercises/ez-bar-spider-curl/), [Leg Resisted Biceps Curl](https://seto.fit/exercises/leg-resisted-biceps-curl/)
- **Kettlebell**: [Incline Bench Kettlebell Preacher Curl](https://seto.fit/exercises/incline-bench-kettlebell-preacher-curl/), [Kettlebell Concentration Curl](https://seto.fit/exercises/kettlebell-concentration-curl/)

## Where to start and where to go next

Same muscles, same movement. Too hard for now — step down; once it gets easy — step up.

- Easier: [Alternating Machine Biceps Curl](https://seto.fit/exercises/alternating-machine-biceps-curl/) — Beginner
- **This exercise: Alternating Dumbbell Curl — Beginner**
- Harder: [Seated Zottman Curl](https://seto.fit/exercises/seated-zottman-curl/) — Beginner
- Harder: [Single Arm Dumbbell Zottman Preacher Curl](https://seto.fit/exercises/single-arm-dumbbell-zottman-preacher-curl/) — Intermediate

## Quick answers

### What muscles does the Alternating Dumbbell Curl work?

Primary: Biceps 10/10. Also works: Forearms 6/10.

### Which joints does the Alternating Dumbbell Curl load?

Elbow: low, Wrist: low.

### When should I do the Alternating Dumbbell Curl in a workout?

Finisher. Goes last, once the heavy work is done. ≈ 6 min with rest.

### How many sets and reps of the Alternating Dumbbell Curl?

Strength: 4–5 sets of 6–8 reps, rest 2 min, 2 reps in reserve. Muscle growth: 3–4 sets of 8–12 reps, rest 1 min 15 s, 2–3 reps in reserve. Endurance: 2–3 sets of 15–20 reps, rest 45 s, 3–4 reps in reserve.

### What can I do instead of the Alternating Dumbbell Curl?

Barbell: Barbell Curl, Single Arm Barbell Curl. Resistance bands: Resistance Band Spider Curl, Squatting Resistance Band Curl. No equipment: EZ Bar Spider Curl, Leg Resisted Biceps Curl. Kettlebell: Incline Bench Kettlebell Preacher Curl, Kettlebell Concentration Curl.

### What is an easier version of the Alternating Dumbbell Curl?

Alternating Machine Biceps Curl (Beginner).

### What is a harder version of the Alternating Dumbbell Curl?

Seated Zottman Curl (Beginner), Single Arm Dumbbell Zottman Preacher Curl (Intermediate).

How we rate exercises: https://seto.fit/guides/methodology/

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