Triceps Long Head Exercises: How to Grow the Long Head
The best triceps long head exercises and why overhead work targets it. Learn anatomy, form, a sample workout, and the mistakes that stunt long-head growth.
The triceps long head is the largest of the three triceps heads and the only one that crosses the shoulder joint — so the best way to target it is with overhead exercises like overhead cable or dumbbell extensions, where the arm is raised and the long head is put on a deep stretch. Training it in that lengthened position drives the most growth in the muscle that gives your arm its thickness from the side and back.
Triceps Anatomy: The Three Heads
The triceps brachii ("triceps" = three heads) sits on the back of your upper arm and is responsible for extending the elbow. Its three heads each attach differently:
- Long head — the largest head. It originates on the scapula (shoulder blade), crossing the shoulder joint, then runs down the back of the arm.
- Lateral head — sits on the outside of the arm and gives the classic "horseshoe" look. It originates on the humerus.
- Medial head — sits deep and lower on the arm, also originating on the humerus, and works in nearly every triceps movement.
Because the lateral and medial heads attach only to the upper-arm bone, their length doesn't change with shoulder position. The long head is the exception — and that's the key to training it.
Why the Long Head Needs Overhead Work
A muscle is worked hardest when it's loaded in a stretched (lengthened) position. Since the long head crosses the shoulder, raising your arm overhead stretches it across both the shoulder and the elbow at once. Pressing or extending from that overhead position then forces the long head to contract from a deep stretch — exactly the stimulus that builds size.
By contrast, exercises where your arms stay down by your sides (like rope pushdowns) keep the long head in a shortened, slackened position, so the lateral and medial heads take over. To grow the long head, you have to get your elbows up.
Muscles Worked
| Muscle | Role in the movement |
|---|---|
| Triceps long head | Primary target — emphasized in overhead/stretched positions |
| Triceps lateral head | Assists elbow extension, peaks when arms are down |
| Triceps medial head | Stabilizes and assists in nearly every rep |
| Anconeus | Small elbow extensor that helps finish the lockout |
| Core & shoulders | Stabilize the torso and arm overhead for control |
Overhead movements bias the long head, while still training the whole triceps — making them efficient for both size and pressing strength.
Best Long-Head Triceps Exercises
Overhead Cable Triceps Extension
Set a cable at the bottom, grab a rope, and face away. Press the rope up so your arms are overhead, then bend at the elbows to lower the weight behind your head and extend back up. Cables keep constant tension through the deep stretch — the single best long-head builder.
Overhead Dumbbell Triceps Extension
Hold one dumbbell with both hands (or a single dumbbell per arm) and press it overhead. Lower it behind your head, keeping elbows pointed forward and close, then extend. The free-weight version loads the bottom stretch hard.
Incline Skull Crushers
Lie on an incline bench and perform skull crushers with a barbell or EZ-bar. The incline angles your arms slightly back behind your head, stretching the long head more than a flat bench — making the incline version more long-head focused.
Overhead Rope Extension (Bent-Over or Standing)
A rope attachment overhead lets your hands spread apart at lockout for a stronger contraction, while the overhead path keeps the long head loaded under stretch throughout the set.
Close-Grip Bench Press (Assist)
A close-grip bench press hammers the whole triceps and lets you overload it with heavy weight. The long head assists rather than leads, so use it for overall mass alongside a dedicated overhead move.
Dips (Assist)
Bench or parallel-bar dips drive heavy elbow extension and build triceps thickness. They train all three heads with load, complementing your overhead long-head work.
Form cue: On any overhead extension, keep your elbows pointed forward and tucked in, not flared. Let the weight travel deep behind your head for a full stretch, then squeeze to lockout.
Sample Long-Head Triceps Workout
| Exercise | Sets | Reps |
|---|---|---|
| Overhead cable triceps extension | 3 | 10–12 |
| Incline skull crushers | 3 | 8–12 |
| Overhead dumbbell extension | 3 | 12–15 |
| Close-grip bench press | 3 | 6–10 |
| Bench or bar dips | 2 | 10–15 |
Run this once or twice a week, resting 60–90 seconds between sets, and progress the load or reps over time.
Common Mistakes to Avoid
- Only doing pushdowns — they shorten the long head and under-train it. Always include an overhead move.
- Flaring the elbows — let them drift out and you lose the long-head stretch and stress the joint.
- Cutting the stretch short — not lowering the weight far enough behind your head wastes the overhead advantage.
- Using too much weight — momentum and partial reps reduce time under tension where it matters most.
- Skipping the lockout — failing to fully extend leaves the contraction incomplete.
Frequently Asked Questions
What is the best exercise for the triceps long head? The overhead cable triceps extension is the top choice because the overhead position stretches the long head while the cable keeps constant tension through the full range of motion.
Do pushdowns work the long head? Pushdowns train the triceps but emphasize the lateral and medial heads. With your arms down, the long head is shortened, so it contributes less. Pair pushdowns with overhead work for balanced development.
How do I make the long head bigger? Train it in a stretched, overhead position with progressive overload — 2–4 sets of overhead extensions a couple of times per week, plus heavy compound triceps work like close-grip bench and dips.
Why does overhead work hit the long head more? The long head crosses the shoulder joint, so raising your arm overhead lengthens it across both the shoulder and elbow. Contracting from that deep stretch maximizes tension on the long head specifically.
Track Your Triceps Training Burn
Adding dips to your triceps day? Estimate the calories you burn:
Related Guides
- Dip Calorie Calculator — Estimate your dip burn
- Fire Hydrant Exercise — Another no-equipment muscle builder