Arms · Barbell

Olympic Barbell Hammer Curl

How to do the olympic barbell hammer curl, the muscles it works, and the mistakes to avoid. Pulled straight from the Kovo app's exercise library.

Animated demonstration of the Olympic Barbell Hammer Curl
Equipment
Barbell
Difficulty
Beginner
Logged as
Weighted reps
Movement
Flexion
Mechanic
Isolation

How to do it

Hold an Olympic barbell at shoulder-width with a neutral, palms-facing grip on the bar or a parallel attachment. Curl the bar up by bending your elbows while keeping them pinned at your sides, then lower under control.

  1. 1Your biceps and forearms driving the bar up
  2. 2Your elbows fixed at your sides through the whole curl
  3. 3A squeeze at the top before a controlled lower

Common mistakes

  • Avoid swinging your torso or using your back to lift
  • Do not let your wrists bend back under the load
  • Avoid letting your elbows drift forward as you curl

Muscles worked

The olympic barbell hammer curl mainly works the biceps and forearms.

  • BicepsPrimary
  • ForearmsPrimary
  • Front DeltsMinor

Kovo programs the olympic barbell hammer curl for you and tracks it every session.

We build your whole program, drop the right lifts into each workout, and adjust your weights as you get stronger. Free on iOS and Android.

More biceps exercises

See all biceps exercises →

Last reviewed June 2026.