Incline dumbbell curls and behind-the-body curls tend to load the biceps long head best, paired with full supination and calm reps.
Chasing the “long head” feel is real. You do a curl, the inside of the arm pumps, and the outside line stays quiet. Then you tweak one detail and it clicks.
This page shows which moves bias that long head, how to set them up, and how to build a week plan that keeps elbows calm.
What Bicep Workout Works The Long Head? Moves That Load It
You can’t fully isolate one head of the biceps. Both heads join into one muscle belly and share the tendon at the elbow. Still, exercise choice and arm position can shift where you feel the work.
Start with two moves. Add a third once reps stay clean.
- Incline dumbbell curl: upper arm sits behind your torso, so the long head starts under a longer stretch.
- Behind-the-body cable curl: cable pulls from behind you, keeping tension as the arm stays back.
- Drag curl: elbows drift back as the bar travels close to your shirt.
- Narrow-grip barbell curl: helps you stay strict and supinate hard.
| Exercise | Setup That Helps | Long Head Cue |
|---|---|---|
| Incline dumbbell curl | Bench 45–60°, shoulders down, arms hang back | Let the biceps stretch, then turn pinky up near the top |
| Behind-the-body cable curl | Stand a step in front of the pulley, handle behind hip | Keep elbow slightly behind ribs through the rep |
| Drag curl | Bar close to torso, wrists straight, no lean-back | Pull elbows back, keep bar brushing the shirt |
| Narrow-grip barbell curl | Hands inside shoulder width, feet locked in place | Rotate forearm fully so knuckles face up at the top |
| Incline hammer-to-supinate curl | Start neutral grip, rotate as you lift | Turn early, not at the finish, and keep elbow pinned |
| High cable curl | Pulleys near head height, step forward to brace | Keep upper arm still, squeeze without shrugging |
| Spider curl (bench braced) | Chest on incline bench, arms hang forward | Stay strict and control the bottom stretch |
| Preacher curl (EZ bar) | Pad set so upper arm rests flat, wrists neutral | Stop short of a hard lockout, keep tension steady |
Long Head Mechanics You Can Feel
The biceps has two upper attachments: a short head and a long head. The long head starts on the shoulder blade and crosses the shoulder joint before it reaches the elbow, so shoulder angle changes its starting length.
At the elbow, the biceps bends the arm and turns the palm up. That “turn” job is why curls feel different when you rotate to palms-up. For a anatomy refresher, see Cleveland Clinic’s arm muscle anatomy.
Why An Arm-Back Start Often Hits The Outside Line
When your upper arm sits a bit behind your torso, the long head starts the curl from a longer position. Many lifters notice the outside biceps line lights up more in that setup. Stay braced so the stretch doesn’t turn into a swing.
That’s why incline curls and behind-the-body cable curls keep showing up. They place the arm back while making cheats harder.
Supination Cues That Don’t Trash Wrists
Rotate toward palms-up during the lift, not after the dumbbell is already near your shoulder. A late twist usually turns into a wrist crank. Keep wrists stacked over forearms through the whole set.
If you prefer neutral grips, use hammer-to-supinate reps so you still finish palms-up on each curl.
Bicep Workout For The Long Head With Shoulder Extension
This section is the “do it like this” part. Pick one stretch-biased curl, one strict mid-range curl, and one cable move that keeps tension steady. Swap one move at a time, not the whole plan.
If you want a clean baseline for curl mechanics, ACE’s step-by-step bicep curl instructions are a reference for posture and elbow control.
Incline Dumbbell Curl Setup
Set a bench to a moderate incline, then sit tall with shoulder blades pulled down and back. Let arms hang so the dumbbells sit a bit behind your hips. Start with a calm stretch, then curl without letting elbows drift forward.
Think “quiet shoulders, loud biceps.” If your shoulders roll up or you arch hard, the long head feel fades fast.
Behind-The-Body Cable Curl Setup
Stand a step in front of a low pulley so the handle starts behind your hip. Keep ribs down, glutes tight, and upper arm slightly back. Curl up while turning the palm toward you as you lift.
Cables shine here because tension stays on during the whole rep, even near the top where dumbbells can feel lighter.
Drag Curl Setup
Hold a barbell or EZ bar and keep it close to your shirt as you curl. The bar drags up your torso while elbows slide back. It feels odd at first, yet it can hit the outside line well when you stay strict.
Skip lean-back reps. If the bar drifts away from your body, it turns into a loose standard curl.
Sets Reps And A Two-Day Week Plan
Most people grow biceps with two sessions per week. One day can lean heavier and stricter, the other can lean toward stretch and cables. Start around 8–12 hard sets per week for biceps work, then adjust based on soreness and progress.
Use a simple rule: add reps first, then add load. When you hit the top of a rep range with clean form, bump weight a small amount and restart at the low end.
Rep Ranges That Tend To Feel Best
Stretch-biased curls feel better in moderate reps like 8–12, where you can stay calm at the bottom. Cable and machine curls often fit 10–15 because the resistance stays smooth. Heavy 5–8 rep curls can work if your elbows tolerate them.
If joints get cranky, keep load modest and lean on tempo and clean supination. You’ll still get a hard set.
| Goal | Two-Day Weekly Plan | Progress Rule |
|---|---|---|
| Long head size focus | Day A: incline curl 4×8–12, drag curl 3×8–10; Day B: behind-body cable 4×10–15, high cable 3×12–15 | Add 1 rep each set, then add load |
| Strength + size mix | Day A: narrow barbell 5×5–8, incline curl 3×8–10; Day B: preacher (EZ) 3×8–12, cable curl 3×12–15 | Add load when sets hit top reps |
| Elbow-friendly build | Day A: hammer-to-supinate 4×10–12, cable curl 3×12–15; Day B: machine curl 4×10–15, drag curl 2–3×10 | Add reps, stay in calm range |
| Short session option | Day A: behind-body cable 3×12–15, incline curl 3×8–12; Day B: high cable 3×12–15, narrow curl 3×8–10 | Add one set after 3 weeks |
| Home setup | Day A: incline curl 4×8–12, drag curl 3×10; Day B: band curl 4×12–20, spider curl 3×10–15 | Slow lowers, add reps first |
Form Checks That Keep Elbows And Shoulders Calm
Most long head misses come from three habits: elbows drifting forward, shoulders rolling up, and wrists bending back. Fix those and many curls start to feel right again.
Use this check before each set: ribs down, glutes tight, shoulders down, elbows set, wrists stacked. Then lift with a smooth path and no bounce.
Tempo That Builds Without Swinging
Try a two-second lower on most curls. The biceps often responds well to that steady eccentric. Keep the top squeeze short, then lower under control until you feel a stretch.
If you can’t own the bottom position, drop load and earn it back with clean reps.
Range That Fits Your Shoulder
Some shoulders dislike deep extension on a steep incline bench. If you feel a sharp pinch in the front of the shoulder, reduce the bench angle or swap to a cable curl with the arm only slightly behind the torso.
Any sharp or burning pain is a stop sign. Rest, then get checked by a licensed clinician if it sticks around.
Two Mini Workouts You Can Run Today
If you want a simple start, run one of these after your back work or as a short arm session. Rest around 60–90 seconds on moderate sets, then 90–120 seconds on heavier sets.
Write down reps. Small weekly jumps add up fast.
Workout A: Stretch And Control
- Incline dumbbell curl: 4 sets of 8–12
- Behind-the-body cable curl: 4 sets of 10–15
- High cable curl: 3 sets of 12–15
Workout B: Bar Path And Squeeze
- Narrow-grip barbell curl: 5 sets of 5–8
- Drag curl: 3 sets of 8–10
- Spider curl: 3 sets of 10–15
Troubleshooting When The Long Head Won’t Light Up
If you keep asking “what bicep workout works the long head?” after trying incline curls, the issue is often setup, not effort. Small tweaks can shift the feel in one session.
Try these fixes one at a time, so you know what changed the set.
- Feel it in forearms: lighten load, stack wrists, rotate to palms-up earlier.
- Feel it in front shoulder: reduce arm-back range, keep shoulder blades down.
- Elbows ache: use EZ bar, slow the lower, avoid hard lockout.
- No stretch at bottom: drop load and pause one second in the stretched spot.
- Can’t stay strict: sit, brace, and keep ribs down.
Putting It Together For A Long Head Look
Put the upper arm a bit back, supinate hard, and keep the shoulder quiet. Then repeat clean reps week after week. That’s the whole trick.
If you still find yourself typing “what bicep workout works the long head?” after four steady weeks, swap one move and keep the rest the same so you can spot what works for your arms.