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Exercise library / Upper body

How to do a skull crushers

Upper bodyDumbbellsIntermediate

Lower the dumbbells toward your forehead and press back up — a classic tricep builder. Control it, hence the name.

How to do it

  1. 1Lie back, dumbbells pressed up over your chest
  2. 2Bend at the elbows to lower toward your forehead
  3. 3Press back up, keeping your elbows still

Common mistakes

  • ×Letting your elbows flare out
  • ×Moving your upper arms instead of just the forearms

Muscles worked

Triceps

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Try these next

Overhead tricep extension
Upper bodyBeginner

Overhead tricep extension

Lower a dumbbell behind your head and press it back up — direct work for the backs of your arms.

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Tricep kickbacks
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Tricep kickbacks

Hinge forward and extend the dumbbells straight back — squeezes the triceps hard at the top.

How to do it →
Dumbbell floor press
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Dumbbell floor press

A chest press lying on the floor — a joint-friendly way to build the chest and triceps with dumbbells.

How to do it →
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