How to do a proper overhead tricep extension

Most people build their triceps with pushdowns, then wonder why the back of the arm still looks flat from the side. The reason is simple. Your triceps has three heads, and the biggest one, the long head, crosses your shoulder as well as your elbow. It only gets fully stretched and loaded when your arm is overhead. The overhead extension puts it in exactly that position, which is why it is one of the most useful arm exercises there is. Done well it is safe, satisfying, and it fills out a part of the arm that pushdowns barely touch. Done badly it flares your elbows and does little. This guide gets you the good version.

The short version

The long head of the triceps only reaches full stretch when your arm is overhead, which is what makes this exercise different from a pushdown.
Training the triceps in the overhead position built substantially more long head muscle than the same work with the arm down in a 2023 study, so the position is the point.
Set up tall, elbows pointed forward and tucked, and lower the weight behind your head until you feel a real stretch.
Keep your upper arms still. The only thing that moves is your forearms swinging around the elbow.
If your elbows ache, it is almost always too much weight, flared elbows, or bouncing out of the bottom. Fix those before you add load.

Why the overhead position matters

Your triceps is one muscle with three parts: the lateral head on the outside, the medial head underneath, and the long head running down the inside back of your arm. The long head is the only one that also crosses your shoulder joint. That single fact changes everything about how you train it.

When your arm hangs at your side, as in a pushdown, the long head is already shortened at the top, so it cannot contribute much. Raise your arm overhead and the long head gets pulled long across both the shoulder and the elbow. Now when you extend your elbow, it works through a big stretched range, which is exactly the kind of loading that drives growth.

Why this belongs in your program

In a 2023 training study, people who trained elbow extension with the arm overhead grew the long head of the triceps far more than people who did the same work with the arm down by their side. If you want fuller arms from the side, the overhead position is not optional, it is the whole reason you do this movement.

The setup, step by step

This works with a dumbbell held in both hands, an EZ bar, a rope on a high or low cable, or a single dumbbell one arm at a time. The cues are the same whatever you hold.

Get tall and braced. Sitting with a back support is the easiest place to learn, because it stops you leaning and cheating. Sit or stand tall, ribs down, core lightly braced. Do not arch your lower back to make the weight feel lighter.
Press the weight overhead. Bring the weight up so your arms are straight and the load is roughly over the back of your head, not way out in front. Your upper arms should be pointing up, close to your ears.
Point your elbows forward and tuck them. This is the key position. Elbows aim forward and stay about shoulder width, not flaring out to the sides. Flared elbows turn the exercise into a joint-stresser and take tension off the muscle.
Lower behind your head. Bend only at the elbows and let the weight travel down behind your head. Go until you feel a clear stretch in the back of your upper arm. This bottom stretch is where the growth lives, so do not cut it short.
Extend back to the top. Drive your forearms back up until your elbows are straight, squeezing the triceps at the top. Do not lock out violently. A firm, controlled straightening is enough.

The one cue that fixes most reps

Think upper arms frozen, forearms swinging. Your elbows should stay in the same spot in space the entire set. If your whole arm is rocking back and forth, you are turning a triceps exercise into a shoulder swing.

The common mistakes and how to fix them

Nearly every problem with this lift is one of these five. Find yours and apply the matching fix.

Mistake	What it looks like	The fix
Elbows flare out	Elbows drift wide as you lower, wrists over the ears	Actively point the elbows forward and keep them shoulder width the whole rep
Upper arms drift	The whole arm rocks forward and back to move the weight	Freeze the upper arms; only the forearms move around the elbow
Short range at the bottom	Stopping halfway down, no stretch felt	Lower until you feel a real stretch behind the head, then reverse
Too much weight	Elbows ache, form falls apart, momentum takes over	Drop the load until you can control the stretch and pause briefly at the bottom
Bouncing out of the bottom	Snapping out of the stretch to fling the weight up	Lower under control, pause a beat, then extend smoothly

About your elbows

The overhead position puts the elbow in a deep, loaded stretch, which is great for the muscle but unforgiving of ego. If your elbows ache, it is almost always too much weight or flared elbows, not the exercise itself. Lighten up, tuck the elbows, and keep the movement smooth. Persistent joint pain, rather than muscle effort, is a reason to back off and, if it continues, get it looked at.

How to fit it into your training

This is an accessory lift, so treat it like one. You do not need heroic weights. You need clean reps through a full stretch.

Run it for higher reps than your big lifts, roughly 8 to 15 per set, where the stretch and control are easy to feel.
Two or three sets, once or twice a week, is plenty of long head work for most people alongside their pressing.
Pair it with a pushdown if you want full triceps coverage. The overhead move hits the long head; the pushdown hammers the lateral head at the short end.
Add weight slowly and only when your current load moves cleanly through the full range. Range and control beat load here every time.

The honest bottom line

The overhead extension is the one triceps exercise that reaches the long head through a full stretch, and that is why it works. Sit tall, point the elbows forward, lower until you feel the stretch, and keep the upper arms still. Do that and you will build the part of the arm that pushdowns leave behind.

Questions people ask

Is the overhead tricep extension bad for your elbows?

For most people it is safe and effective when done with sensible weight and tucked elbows. The overhead position does load the elbow in a deep stretch, so aching joints usually mean the weight is too heavy, the elbows are flaring, or you are bouncing out of the bottom. Fix those first. If you feel sharp joint pain rather than muscle effort, back off the load, and if it persists, get it assessed.

Overhead extension or pushdown, which is better for triceps?

They do different jobs, so the best answer is both. The overhead extension stretches and loads the long head, which builds thickness you can see from the side. The pushdown works the lateral head hard at the shortened end. A pushdown for one and an overhead move for the other covers the whole muscle.

Should I use one dumbbell in both hands or one arm at a time?

Either works. Two hands on one dumbbell is stable and easy to load, which is great for learning. Single arm versions, or a cable, let you feel each side independently and often give a cleaner stretch. Pick whichever lets you keep your upper arm still and reach a full stretch.

Why do I feel this in my shoulders instead of my triceps?

Usually your upper arms are drifting or your elbows are flaring, so the movement becomes a shoulder swing instead of an elbow extension. Freeze your upper arms near your ears, point your elbows forward, and move only your forearms. If you still feel it in the shoulder, lower the weight and slow down.

References

Maeo S, et al. European Journal of Sport Science. Triceps brachii hypertrophy is substantially greater after elbow extension training performed in the overhead versus neutral arm position. 2023. doi.org/10.1080/17461391.2022.2100279
Alves D, Matta T, Oliveira L. Journal of Sports Medicine and Physical Fitness. Effect of shoulder position on triceps brachii heads activity in dumbbell elbow extension exercises. 2018. doi.org/10.23736/S0022-4707.17.06849-9
American College of Sports Medicine, Medicine & Science in Sports & Exercise. Progression Models in Resistance Training for Healthy Adults. 2009. doi.org/10.1249/MSS.0b013e3181915670

Last reviewed 18 July 2026. We check health-condition articles against current guidelines and update the date above when we do.