Single-arm dumbbell overhead extension

Muscle group

Arms

Equipment

Dumbbell

Primary muscles

Triceps

Secondary muscles

Forearms

1. Sit or stand upright holding a dumbbell overhead with one hand, arm fully extended, and core braced to keep your lower back neutral.
2. Bend your elbow to lower the dumbbell behind your head under control, keeping your upper arm stationary and feeling a deep stretch in your triceps.
3. Extend your arm to press the weight back overhead to the starting position, squeezing your triceps at the top before repeating.