Grasp a loaded barbell using a shoulder-width, pronated (overhand) grip.
Lie supine (on your back) on a flat bench.
Press the barbell upward until your arms are fully extended and hold it over your forehead.
Execution
Inhale as you flex your elbows and shoulders to lower the barbell behind your head.
Exhale as you extend your elbows and shoulders to raise the barbell back to the starting position.
Repeat.
Comments and tips
To keep the emphasis on your triceps brachii, keep your elbows close to your head.
Keep the movement in your shoulders to a minimum. Most of the movement should be in your elbows.
An EZ-curl bar might be easier on your wrists.
Instead of lying down while holding the barbell, you can lie down and get a training partner to hand you the barbell.
The lying barbell triceps extension should not be confused with the skull crusher, which is almost the same exercise except you keep your elbows fixed and lower the barbell to your forehead. See the second video.
