Dumbbell Single Arm Skull Crusher
A step-by-step form guide from the Ægir Iron exercise library: how to do the lift, what to watch for, and the muscles it trains.
- Equipment
- Dumbbell
HOW TO PERFORM
- Lie on a flat bench holding one dumbbell at arm's length over the shoulder.
- Keeping the upper arm still, bend the elbow to lower the dumbbell beside the head.
- Extend back to the start, finish the set on that arm, then switch.
FORM TIPS
- If the working arm drifts, steady it with the free hand on the upper arm. Only the elbow moves.
TARGET MUSCLES
Primary
- Triceps
Log it in Ægir Iron to track your PRs and estimated 1RM, and to see the sets each muscle gets every week. Free for individual lifters.