If your arms are not growing despite endless pushdown sets, the problem is not effort. It is angle. The long head is the biggest of the three triceps muscles, and it only responds fully when your arm is trained overhead, not just straight down at your side.
This guide breaks down why arm position changes which part of the triceps grows, then gives you the exact exercises, rep ranges, and common mistakes that separate a decent triceps session from one that actually adds size to your arms.
Why Arm Position Determines Long Head Growth
The triceps has three heads: lateral, medial, and long. The long head is the only one that crosses both the shoulder and elbow joint, which is why it behaves differently from the other two.
Because it attaches above the shoulder, the long head gets stretched when your arm is raised overhead and shortened when your arm is pulled behind your torso. A muscle trained in a stretched position under load grows faster than one trained only in a shortened position. That single fact explains almost everything about which triceps exercises work and which ones underperform.
This is why a pushdown, done with your elbow pinned to your side, barely stretches the long head at all. It hammers the lateral and medial heads instead. Meanwhile an overhead extension puts the long head through a full stretch before you even start the rep, which is exactly the kind of tension that drives hypertrophy.
The Two Positions That Matter Most
There are two arm positions worth understanding before you pick exercises.
- Overhead position: your upper arm is raised past your ears. This stretches the long head at the shoulder, so every rep starts from a lengthened position. Overhead extensions, whether barbell, dumbbell, or cable, all use this angle.
- Behind the torso position: your upper arm is pulled backward, past your ribs. This shortens the long head completely. Kickbacks use this position, which is why they hit the one spot most overhead work misses, the fully contracted end range, even though they are a poor exercise on their own.
Neither position alone builds a complete triceps. You want at least one overhead movement and one pressing or pushdown movement in every triceps session.
Best Long Head Tricep Exercises
Below are the exercises that consistently deliver the most long head stimulus, ranked by how directly they target the stretched position. Do the how-to steps carefully. Form errors here are the main reason people plateau.
1. Overhead Cable Triceps Extension
This is the single best exercise for the long head if you have access to a cable stack. The constant tension of a cable, combined with the stretched overhead position, keeps the muscle loaded through the entire range in a way free weights cannot match.
How to do it:
Attach a rope to the low pulley. Face away from the machine, lean forward slightly, and hold the rope behind your head with your upper arms next to your ears. Straighten your elbows until your arms are fully extended, then return with control. Keep your upper arms still throughout, only the forearms should move.
Sets and reps: 3 sets of 10 to 15 reps.
Common mistake: letting the elbows flare outward or drift forward. This shifts tension away from the long head and turns the movement into a shoulder exercise.
2. Dumbbell Overhead Triceps Extension
A dumbbell version works well when you train at home or prefer free weights. Using one heavy dumbbell held with both hands lets you load the movement more than most people expect.
How to do it:
Sit on a bench with your back straight. Hold one end of a dumbbell with both palms flat against the top plate, and press it overhead until your arms are straight. Lower it slowly behind your head until you feel a deep stretch, then extend back up.
Sets and reps: 3 sets of 8 to 12 reps.
Common mistake: cutting the range short. Many lifters stop the descent once the forearm is roughly parallel to the floor, which skips the deepest part of the stretch where most of the growth signal comes from.
3. Barbell or EZ Bar Lying Triceps Extension
Known as the skullcrusher, this exercise builds serious mass when you lower the bar behind your head rather than to your forehead. That small change turns a generic triceps movement into a genuine long head builder.
How to do it:
Lie on a flat bench with a barbell or EZ bar held at arm’s length above your chest, using a shoulder-width grip. Lower the bar with control until it is just behind your head, keeping your upper arms still, then press back to the start.
Sets and reps: 3 sets of 8 to 10 reps.
Common mistake: flaring the elbows out as the weight gets heavier. Keep them tracking in a fixed position to protect your elbows and keep tension on the triceps rather than the shoulders.
4. Close Grip Bench Press
This is not an isolation movement, and it will not stretch the long head the way overhead work does. But it lets you move more weight than any other triceps exercise, and heavier loading over time is one of the most reliable ways to add muscle to any body part, including the long head.
How to do it:
Lie on a flat bench and grip the bar just inside shoulder width. Lower it to your lower chest while keeping your elbows tucked at roughly a 30 degree angle from your torso, then press back up explosively.
Sets and reps: 3 sets of 6 to 8 reps.
Common mistake: gripping too narrow. Hands closer than shoulder width put unnecessary strain on the wrists without adding triceps benefit.
5. Weighted Dips
Dips are often filed as a chest exercise, and leaning forward does shift emphasis toward the pecs. Keep your torso upright instead, and dips become one of the most effective compound builders for the whole triceps, long head included.
How to do it:
Grip a dip bar and press up to full arm extension. Keep your torso as vertical as you can manage, bend your knees to keep your feet clear of the floor, and lower yourself until your upper arms are roughly parallel to the ground. Press back up.
Sets and reps: 3 sets of 8 to 10 reps, adding weight with a dip belt once bodyweight gets easy.
Common mistake: leaning too far forward. This is fine if your goal is chest, but it pulls stimulus away from the triceps.
6. Cable Triceps Kickback
Kickbacks with a dumbbell are genuinely weak, because gravity provides almost no resistance at the bottom of the movement. A cable fixes this by keeping tension on the muscle throughout, including the fully contracted position that overhead exercises cannot reach.
How to do it:
Set a cable pulley to its lowest position. Hinge forward at the hips until your torso is close to parallel with the floor, keep your upper arm tucked against your side, and straighten your arm backward. Squeeze hard at the top before returning.
Sets and reps: 2 sets of 12 to 15 reps, used as a finisher rather than a primary movement.
Common mistake: swinging the torso to generate momentum instead of isolating the elbow extension.
How to Build These Into a Triceps Workout
You do not need to do all six exercises in one session. A well built triceps day covers three angles: a heavy compound press, an overhead stretch movement, and a pushdown or kickback for the contracted position.
A simple, effective structure looks like this:
- Close grip bench press or weighted dips, 3 sets of 6 to 8 reps
- Overhead cable triceps extension or dumbbell overhead extension, 3 sets of 10 to 12 reps
- Cable triceps kickback, 2 sets of 12 to 15 reps
Train triceps directly two to three times per week if arm size is a specific goal. If your chest and shoulder days already include heavy pressing, one dedicated overhead-focused session per week is often enough on top of that indirect work.
Common Questions About Long Head Training
1. Do dips work the long head of the triceps?
Yes, but only when you keep your torso upright. Leaning forward during dips shifts the emphasis toward the chest and reduces how much work the long head does.
2. Is close grip bench press a long head exercise?
It trains all three heads together rather than isolating the long head specifically. Its value comes from the heavy loading it allows, not from the stretch position, so pair it with an overhead movement for complete development.
3. How long does it take to see long head growth?
With consistent training, adequate protein intake, and progressive overload, most lifters notice visible changes within eight to twelve weeks. Genetics, training experience, and total weekly volume all affect this timeline.
4. Can you train long head triceps without equipment?
Bodyweight overhead extensions using a sturdy bar or table edge can stretch the long head effectively, though they max out in difficulty faster than loaded exercises. Dips using parallel bars or sturdy furniture also work well without a gym.
5. Why is my long head not growing despite training triceps regularly?
The most common reasons are skipping overhead movements entirely, cutting the range of motion short on extensions, or not training with enough total weekly volume. Ten to twenty working sets per week, with at least one overhead exercise included, is the baseline most lifters need for visible growth.
