Biceps anatomy: the muscles behind a curl
The front of the upper arm is made of more than the biceps. Three muscles bend the elbow, and how you hold the weight changes which one does the most work. That is why a good arm workout uses more than one grip.
| Muscle | What it does | Works most when | Key exercise |
|---|---|---|---|
| Biceps brachii, long head | Bends the elbow, turns the palm up, crosses the shoulder | The arm is behind the body (stretched) | Incline dumbbell curl |
| Biceps brachii, short head | Bends the elbow, turns the palm up | The arm is in front of the body | Preacher curl, cable curl |
| Brachialis | Bends the elbow in any grip, sits under the biceps | The palm faces down or in | Hammer curl, reverse curl |
| Brachioradialis | Bends the elbow with a neutral grip, forms the top of the forearm | Thumbs point up | Hammer curl |
| Wrist flexors and extensors | Grip, bend and straighten the wrist | Holding and squeezing heavy weights | Wrist curl, farmer's carry |
All bicep and forearm exercises
Farmer's carryForearms and traps
Barbell curlBiceps
Dumbbell curlBicepsGuide
Hammer curlBiceps and forearmsGuide
Band curlBiceps
Dumbbell wrist curlForearms
Chin-upLats and biceps
Suitcase carryObliques and forearmsBest bicep exercises, ranked
- Dumbbell curl: lets each arm work alone and allows you to turn the palm up as you lift, which is a key job of the biceps. The bicep curl guide covers form and the main variations.
- Barbell curl: the easiest curl to load heavy, so it fits as the first exercise of the bicep workout. An EZ bar is kinder to the wrists.
- Hammer curl: the best exercise for the brachialis and forearms, which add thickness to the arm when seen from the side. Read the hammer curl guide.
- Incline dumbbell curl: sitting back on an incline bench puts the arm behind you and stretches the long head. Use lighter weights than on standing curls.
- Chin-up: a palms-up pull-up that loads the biceps hard while also training the lats. Great when you want one exercise to cover both.
- Cable curl: keeps tension at the bottom and the top, and is easy to load in small steps. Good as the last exercise for higher reps.
- Preacher curl: the pad stops you swinging, so every rep is strict. Control the bottom, where the elbow is close to straight.
Rows and pulldowns already train your biceps as a helper muscle, which is why many programs pair arm work with a back day. The back exercises guide shows how to build that pull day.
Bicep workout for the gym
A simple structure that suits most lifters: heavy first, stretch second, a thickness exercise third. About 30 minutes, either on its own or after a back session.
| Exercise | Sets x reps | Rest | Why |
|---|---|---|---|
| Barbell or EZ bar curl | 3 x 6 to 10 | 90 s to 2 min | Heavy load, both heads |
| Incline dumbbell curl | 3 x 8 to 12 | 90 s | Long head in the stretch |
| Hammer curl | 3 x 10 to 12 | 60 to 90 s | Brachialis and forearms |
| Cable curl | 2 x 12 to 15 | 60 s | Tension at the top, finisher |
If you want a full arm workout, add two triceps exercises, such as cable pushdowns and overhead extensions, and alternate them with the curls. The triceps make up the larger part of the upper arm, so they matter as much for arm size.
Arm workout with dumbbells
A pair of dumbbells is all you need for a complete arm workout at home or in a busy gym. Do it as pairs: one biceps and one triceps exercise back to back, then rest.
| Pair | Exercise | Sets x reps | Rest after the pair |
|---|---|---|---|
| A1 | Alternating dumbbell curl | 3 x 8 to 12 per arm | |
| A2 | Overhead dumbbell triceps extension | 3 x 10 to 12 | 90 s |
| B1 | Hammer curl | 3 x 10 to 12 | |
| B2 | Close-grip push-up | 3 x 8 to 15 | 90 s |
| C1 | Concentration curl or incline curl | 2 x 12 to 15 per arm | |
| C2 | Dumbbell wrist curl | 2 x 12 to 15 | 60 s |
Bicep workout at home without weights
Bodyweight bicep work is limited, but not impossible. Chin-ups on a doorway bar are the best option. Without a bar, inverted rows with palms up under a sturdy table, band curls and curls with a filled backpack or water jugs work. Slow the lowering to 3 to 4 seconds to make light loads count.
Sets, reps and frequency for biceps
| Level | Sessions per week | Direct sets per week | Reps |
|---|---|---|---|
| Beginner | 1 to 2 | 4 to 8 | 8 to 12 |
| Intermediate | 2 | 8 to 12 | 6 to 15 |
| Advanced | 2 to 3 | 10 to 16 | 6 to 20, mix heavy and light |
These are typical ranges. Count only direct arm sets; rows, pulldowns and chin-ups add to them. Rest 60 to 120 seconds, stop 1 to 2 reps short of failure, and add weight when you reach the top of the range in every set. Dumbbells jump in big steps for small muscles, so it is often better to add one rep at a time first. The progressive overload guide explains how. For a split that gives arms their own day, see the Arnold split.
Gripp knows your last curl
Gripp is coming to iPhone. Log your sets and Gripp tells you what to lift next session: last time 10 reps at 14 kg (30 lb), today go for 11. Every exercise gets an estimated max on a progress chart, and your arm strength is rated against people of your age and bodyweight.
Join the waitlistBicep workout mistakes
- Swinging the weight. If your hips and back move, the weight is too heavy. Keep the upper arms still at your sides.
- Half reps at the bottom. Straighten the arm fully at the bottom. The stretched part of the rep is where a lot of growth seems to come from.
- Elbows drifting forward. Lifting the elbows turns the curl into a front raise. Keep them pinned until the very top.
- Only one grip. Palms up hits the biceps, thumbs up adds the brachialis and forearms. Use both.
- Training arms before back. Tired biceps limit your rows and pull-ups. Do the big pulls first.
- Ignoring elbow pain. A wider grip, an EZ bar or cables usually help. Pain that stays is a reason to see a physiotherapist.
Every curl and forearm exercise in this article has its own card in the exercise library, with a muscle map showing what it trains.