Equipment
Dumbbell triceps exercises
Dumbbells load the triceps through three families of movement. The lying extension comes on a flat bench, on an incline bench and on the floor. The overhead extension is done seated, standing, with both hands and with one. The third family is the kickback. All of them come down to straightening the elbow, but each one puts your upper arm somewhere different relative to your torso.
A dumbbell always pulls straight down, so what decides where a movement is hardest is the moment your forearm lies parallel to the floor. That is the biggest difference between these exercises and the simplest way to choose between them.
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About training Dumbbell triceps exercises
Choose one movement, perform it well, then progress it over time.
Where is a dumbbell heaviest?
Gravity pulls a dumbbell straight down, so resistance at the elbow is greatest when your forearm lies parallel to the floor and smallest when it stands vertical. Three completely different exercise characters on this list follow from that one sentence.
The lying extension is heaviest at the bottom, by your forehead, and at the top the dumbbells stand over your shoulder and the triceps gets a moment off. The overhead extension is heaviest at the bottom too, except there the arm is stretched on top of that, because the elbow travels behind your head. The kickback works the other way around: at the start the dumbbell hangs free and weighs practically nothing at the elbow, and all the resistance shows up at the end, in the full lockout.
Which is why these movements do not stand in for one another. Two exercises from different families load the range differently than two variants of the same pattern do, however alike they look on paper.
One arm or both?
A good share of this list is single-arm work, and there are several reasons for it. Each arm works on its own, so the weaker one cannot hide behind the stronger one. The free hand can prop up your torso in the bent-over position or hold your elbow in place overhead. With one arm it is also easier to see whether the upper arm really is staying still, which is what every one of these descriptions asks for.
The cost is time: everything takes twice as long. The two-handed versions have an advantage of their own that is easy to forget. A single dumbbell held in both hands is divided between two arms, so it lets you add load in smaller steps than a pair of dumbbells does.
It is worth looking separately at how much stabilizing each position demands. The overhead extension seated on a bench with a back pad is mostly elbow work, because your back has something to lean on. The same movement standing on one arm already asks your torso not to tip sideways, and in the bent-over position the descriptions ask outright for tight abs and a flat back.
Progress the movement
Start on the floor
Lying on the floor, the lowering ends the moment your elbow touches down. The same dumbbell on a bench travels deeper, and that is usually a bigger change than reaching for a heavier pair.
Then an incline instead of kilos
On an incline bench, head up, the dumbbells go further back behind your head, so the rep starts with the arm stretched out more. At the same weight that is harder than the flat version.
The smallest step is the two-handed version
One dumbbell held overhead in both hands is split between two arms, so taking the next one off the rack means half that jump per arm. Hold a dumbbell in each hand and the same step on the rack is twice as big.
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