Dumbbell Overhead Triceps Extension
The dumbbell overhead triceps extension is an isolation exercise with the upper arms vertical beside the head, lowering a dumbbell in each hand behind it and extending the elbows to load the long head of the triceps.
TRICEPS · PUSH
How it is executed
- Sit or stand holding a dumbbell in each hand overhead with a neutral grip, arms fully extended above your shoulders.
- Keeping your upper arms close to your head, bend at the elbows to lower the dumbbells behind your head until you feel a strong stretch in the triceps.
- Press the dumbbells back overhead by extending your elbows, stopping just short of lockout to keep tension.
- The overhead path biases the long head, and the dumbbells allow each arm to move freely.
Common mistakes
- Flaring the elbows out to the sides. When the elbows drift apart, the upper arm is no longer vertical and the long head loses the stretch that gives the exercise its point. Keep the elbows pointing forward and close to the head.
- Arching the lower back with the weight overhead. With the arms above the head, the ribs flare and the lower back makes up for missing shoulder mobility. Squeeze the glutes, pull the ribs down or do it seated with back support.
- Driving the arms forward on the way up. If the elbows travel toward the front, the dumbbell rises like a press and the shoulder takes part of the work. The upper arm stays vertical for the whole rep: only the forearm moves.
- Cutting the lowering short of the stretch. With too much weight, many stop with the elbow at 90 degrees and lose the most useful part of the range. Lower until the forearm almost touches the biceps, with a load you can control.
Frequently asked questions
- Which muscles does the overhead triceps extension work?
- The triceps brachii in all three heads, with the long head as the main player: with the arm raised, that head, which also crosses the shoulder, starts stretched and works in a range a cable pushdown never reaches. The anterior deltoid and serratus anterior hold the arms overhead isometrically, the forearms hold the dumbbells and the abs keep the ribs down so the lower back does not arch.
- Overhead extension with dumbbells or an EZ bar: which one should you pick?
- Dumbbells let each arm pick its own path, so the elbows complain less and the weak side cannot hide behind the strong one; in exchange, they are harder to get into the start position and the maximum load is lower. The EZ bar allows more weight with the hands fixed and is easier to set overhead. Start with dumbbells to learn to lock the elbows, and move to the bar when you want heavy sets of 6 to 10.
- How many sets and reps of the dumbbell overhead triceps extension should you do?
- A common starting point is 3 sets of 10 to 15 reps, leaving 1 to 3 reps in reserve, with a two to three second lowering. The stretched position is what pays, so the load is chosen to get to the bottom with the elbows still, not to move a lot of weight. It goes after the presses, with the triceps warm, and pairs well with a cable pushdown, which loads the end of the range.
- Do you do it with one dumbbell in both hands or one in each hand?
- Both versions exist and work the same muscle. With a dumbbell in each hand, neutral grip, each arm moves freely: it is the version with more control, useful for evening out sides. With a single dumbbell held by the top plate with both hands, you load more and it is simpler to set overhead, but the elbows tend to flare and the strong side takes over. If you pick a single dumbbell, keep the elbows pointing forward.
Sources and editorial approach
The explanation, variations and FAQs are Kaizer’s editorial synthesis. ACSM’s 2026 guidance provides general context on progression and resistance training in healthy adults; it does not independently validate the technique of each variation.
No individual professional review is recorded for this page.
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