Exercise guide
Dumbbell Preacher Hammer Curl
- Intermediate
- Isolation
- Rep-based
- Upper arms
This isolation exercise uses a preacher bench to stabilize the arm and a neutral grip to target the brachialis and brachioradialis, building thickness in the outer biceps and forearms.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Adjust the preacher bench height so the top of the pad fits snugly into your armpits while seated or standing.
- Grasp a dumbbell with a neutral grip (palm facing your midline) and rest your arm fully against the pad.
- Position your feet shoulder-width apart and plant them firmly on the floor for stability.
- Ensure your triceps and the back of your upper arm are in total contact with the padding.
How to do it
- Exhale as you curl the dumbbell toward your shoulder, keeping your wrist neutral and your arm flat against the pad.
- Squeeze the muscle hard at the top of the movement, ensuring your elbow remains the only pivot point.
- Inhale as you slowly lower the weight back to the starting position over a 3-second count.
- Stop just short of a full elbow lockout to maintain tension before starting the next repetition.
Form checklist
- Keep your wrist straight and firm; do not let it tilt toward your forearm.
- Maintain constant contact between your armpit and the top of the bench pad.
- Avoid leaning your torso back or using momentum to swing the weight up.
- Keep your shoulders retracted and down to prevent them from rolling forward.
Pro tips
- Focus on pressing your triceps into the pad throughout the entire set to maximize mechanical tension on the brachialis.
- Imagine driving the thumb side of your hand toward the ceiling to ensure you maintain a true neutral grip.
Make it harder
- Incorporate a 2-second pause at the midpoint (90-degree angle) during the lowering phase to increase time under tension.
- Use a fat grip attachment or wrap a small towel around the dumbbell handle to further challenge your grip and forearm strength.
Frequently asked
- What muscles does the dumbbell preacher hammer curl work?
- The dumbbell preacher hammer curl primarily targets the biceps.
- What equipment do you need for the dumbbell preacher hammer curl?
- The dumbbell preacher hammer curl uses dumbbell.
- Is the dumbbell preacher hammer curl good for beginners?
- The dumbbell preacher hammer curl is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.