How the biceps work
The biceps brachii has two heads, long and short. Both start on the shoulder blade and join into one tendon below the elbow, so the muscle crosses two joints. At the elbow it bends the arm and rotates the forearm palm-up; at the shoulder it helps a little with lifting the arm forward. Underneath it lies the brachialis, which only bends the elbow, and on the thumb side of the forearm sits the brachioradialis. All three work in every curl; your grip decides how the load is shared between them.
You cannot isolate one head, but arm position shifts the emphasis. With the elbow behind the body, as on an incline dumbbell curl, the long head starts more stretched; with the elbow in front, as on a preacher curl, many people feel the short head more. Those are refinements. A full range of motion and a steady rise in load matter far more.
Curls, pulls, free weights or machines?
Pulling exercises already train the biceps. The lat pulldown, the seated cable row and the one-arm dumbbell row all bend the elbow against a heavy load, and a beginner's arms will grow from those for a while. Curls add what pulls cannot: the biceps works through its whole range and is the muscle that ends the set.
For the curls themselves, each tool has its reason. Dumbbells let each wrist rotate and expose a weaker arm. A barbell or EZ bar takes the most load and progresses in small steps. Cables keep tension at the bottom of the rep, where free weights go light. The bicep curl page covers the palms-up versions, and the hammer curl covers the neutral grip.
If you are wondering which machine suits the biceps most, the honest answer is the cable station: one pulley gives you bar curls, single-arm curls, rope hammer curls and underhand pulldowns. A preacher-curl machine, where a gym has one, is handy for working close to failure without any swing, but it does nothing a strict dumbbell curl cannot. The cable machine and dumbbells pages explain how to set up each.
How much, and how often
There is no proven ideal number of sets for the biceps. More weekly hard sets tends to bring more growth on average, with diminishing returns, and your pulling work already counts for something. A practical starting point is about four to eight hard sets of curls a week, split across two sessions, on top of your rows and pulldowns. If your arms recover well but stop progressing, add a set or two; if your elbows ache or your pulling suffers, cut back. The hypertrophy volume calculator counts direct and indirect sets so you can see your real weekly total.
Most biceps sets work well between 8 and 15 reps, finished one or two reps short of failure, with about a minute of rest. Put the heavy pulling first and the curls after it, so tired arms never limit your back work.
Two sample sessions
Pull day with biceps work
A back-and-biceps session built from library pages: the lat pulldown, seated cable row, dumbbell row, bicep curl and hammer curl.
| Exercise | Sets × reps | Notes |
|---|---|---|
| Lat pulldown | 3 × 8–12 | The main vertical pull |
| Seated cable row | 3 × 10–12 | Pause with the handle at your stomach |
| One-arm dumbbell row | 2 × 10 each side | Lighter than your main row |
| EZ-bar curl | 3 × 8–12 | Strict, no lean back |
| Hammer curl | 2 × 10–12 | Squeeze the handle at the top |
Short arm session
For a day when you only have time for arms, or as a second weekly session. Pair each curl with a triceps exercise from the triceps guide and alternate between them.
| Exercise | Sets × reps | Notes |
|---|---|---|
| Cable curl | 3 × 10–15 | Alternate sets with a tricep pushdown |
| Incline dumbbell curl | 2 × 10–12 | Ask the team for an adjustable bench |
| Cross-body hammer curl | 2 × 10–12 each arm | One arm at a time |
| 21s on the EZ bar | 1 set | Optional finisher |
Rest about a minute between pairs. The workout split calculator helps if you are deciding where arm work fits in your week.
Mistakes that hold arms back
- Loading curls so heavily that the hips do the lifting. Strict reps at a modest weight train a small muscle better than a heave.
- Skipping the bottom of the rep. The stretched position is where a curl is hardest and most useful, and half reps leave it out.
- Curling before pulling. Tired biceps limit rows and pulldowns, so the back gets less work; train arms last.
- Using one curl forever. Alternating a palms-up curl with a neutral-grip one, and changing implements between training blocks, works the elbow flexors more broadly.
- Ignoring elbow pain. An ache that builds from session to session is a reason to stop and see a doctor or physiotherapist, not to train through it.
- Not tracking. Write down the weight and reps; without a record it is easy to repeat the same session for months.
How this guide differs from our beginner top five
Our earlier article, Top 5 biceps exercises for beginners, is a starter list: five curls with step-by-step form for someone in their first months of training. This page is the biceps hub of the exercise library. Rather than ranking movements, it explains how the muscle works, how curls and pulls share the job, how much weekly work to aim for and how to lay out a session, and it links to a full technique page for each movement. The list of movements below grows with the library; browse the whole exercise library for other muscle groups.
Training biceps at RPM
RPM's floor photos show a dumbbell rack, a rack of fixed barbells that includes EZ bars, and multi-station cable towers with a pulldown seat, which covers every curl and pull in the sessions above. An adjustable bench for incline curls, a preacher bench and a curl machine are not in those photos, so ask what is on the floor during your free tour. RPM has a Mixed section and a women-only Ladies section; for a programme built around your arms and back, book personal training.
Questions, answered.
Can you target each head of the biceps?
Not in isolation. Curls with the elbow behind the body, such as the incline curl, stretch the long head more, and curls with the elbow in front, such as the preacher curl, tend to be felt more in the short head. A full range and steady progress matter more than either.
What are good bicep exercises with dumbbells?
The standing or seated dumbbell curl, the hammer curl, the incline dumbbell curl, the concentration curl and the cross-body hammer curl. The one-arm dumbbell row adds heavier pulling work for the biceps and back.
Which bicep exercises can I do on a cable machine?
Bar or EZ-attachment curls from the low pulley, single-arm cable curls, the rope hammer curl and an underhand-grip pulldown. The cable keeps tension at the bottom of the rep and moves in small increments, which suits a small muscle.
Can I train biceps at home without equipment?
Only up to a point. Chin-ups with your palms facing you load the biceps well, and a resistance band can mimic a curl. Beyond that you need something to lift, which is where dumbbells and cables earn their place.
Should women train biceps differently?
No. The muscle works the same way in everyone, so the same exercises, rep ranges and progression apply. Choose loads by how the last reps feel, not by what anyone else lifts. You can ask for a female personal trainer if you prefer.
How many bicep exercises should I do per workout?
One or two, after your pulling. A palms-up curl plus a hammer curl covers the elbow flexors well; a third variation rarely adds much unless arms are the focus of the day.