# Stability Ball Dumbbell Preacher Curl

A dumbbell curl done kneeling behind a stability ball with the chest and upper arms resting on it, preacher style. The ball fixes the upper arms, so the biceps work through a strict range with both arms together.

- Beginner · Isolation
- Equipment: Dumbbells, Stability ball
- HD video: https://media.seto.fit/exercises/dumbbell-preacher-curl-over-exercise-ball/video/male.mp4
- HTML: https://seto.fit/exercises/stability-ball-dumbbell-preacher-curl/

## Muscles worked

- Biceps: 9/10
- Forearms: 5/10

## How to do the Stability Ball Dumbbell Preacher Curl

1. Kneel and rest your chest and upper arms on the ball.
2. Hold a dumbbell in each hand, palms up, arms nearly straight.
3. Curl the weights up, bending your elbows, keeping your upper arms still.
4. Lower the weights slowly back to the starting position.

### Full technique — 7 steps

1. Kneel behind a stability ball and lean forward so your chest and upper arms rest on it.
2. Hold a dumbbell in each hand with an underhand grip, elbows nearly straight in front of the ball.
3. Keep your chest on the ball and the backs of your upper arms pressed against it.
4. Curl both dumbbells upward by bending your elbows without lifting your upper arms off the ball.
5. Raise until the forearms are nearly vertical and the biceps fully shorten.
6. Lower the dumbbells back down until the elbows are almost fully extended.
7. Keep the ball still throughout without rocking your body to start each rep.

## Common mistakes

- Upper arms lifting off the ball
- Rocking the ball to start reps
- Cutting off the bottom range
- Letting shoulders roll forward
- Bending the wrist through the curl

## Form cues

- Keep upper arms still
- Palms stay up
- Keep the ball still
- Reach full elbow extension
- Match both sides

## How much to do

- **Strength**: 3–4 sets of 6–8 reps · rest 1 min 30 s · 2–3 reps in reserve · lower 3 s, lift 1 s
- **Muscle growth** (good fit): 3–4 sets of 8–12 reps · rest 1 min 15 s · 2–3 reps in reserve · lower 3 s, lift 1 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.

- **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/)
- **Barbell**: [Barbell Curl](https://seto.fit/exercises/barbell-curl/), [Single Arm Barbell Curl](https://seto.fit/exercises/single-arm-barbell-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: Stability Ball Dumbbell Preacher 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 Stability Ball Dumbbell Preacher Curl work?

Primary: Biceps 9/10. Also works: Forearms 5/10.

### Which joints does the Stability Ball Dumbbell Preacher Curl load?

Elbow: moderate, Wrist: low. Elbow — lighter options: Hammer Curl, Alternating Dumbbell Curl, Incline Dumbbell Curl.

### When should I do the Stability Ball Dumbbell Preacher Curl in a workout?

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

### How many sets and reps of the Stability Ball Dumbbell Preacher Curl?

Strength: 3–4 sets of 6–8 reps, rest 1 min 30 s, 2–3 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 Stability Ball Dumbbell Preacher 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. Barbell: Barbell Curl, Single Arm Barbell Curl.

### What is an easier version of the Stability Ball Dumbbell Preacher Curl?

Alternating Machine Biceps Curl (Beginner).

### What is a harder version of the Stability Ball Dumbbell Preacher 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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