Exercise guide
Dumbbell Preacher Curl
- Intermediate
- Isolation
- Rep-based
- Upper arms
The Dumbbell Preacher Curl is a premier isolation exercise that eliminates momentum to maximize tension on the biceps brachii, particularly the short head. By fixing the arm against a pad, it ensures the bicep does all the work while providing a significant stretch at the bottom of the movement.
Reviewed by the Crucible Fit team · Updated June 2026
Muscles worked
Setup
- Adjust the preacher bench height so your armpit rests snugly against the top of the pad.
- Hold a dumbbell in one hand with an underhand grip and sit or stand firmly behind the bench.
- Extend your arm fully across the pad, ensuring your triceps and elbow are in complete contact with the cushion.
- Place your non-working hand on the bench or your hip for stability.
How to do it
- Inhale and slowly lower the dumbbell until your arm is fully extended, maintaining constant tension on the bicep.
- Exhale as you curl the weight toward your shoulder, keeping your elbow and upper arm pinned to the pad.
- Squeeze the bicep forcefully at the top of the movement for one second.
- Lower the weight with a controlled 3-second tempo back to the starting position.
Form checklist
- Keep your triceps and elbow glued to the pad throughout the entire set.
- Avoid leaning back or using your torso to swing the weight up.
- Maintain a straight, neutral wrist to prevent forearm fatigue from limiting the set.
- Perform the full range of motion, but stop just short of a total elbow lockout to protect the joint.
Pro tips
- Focus on driving the back of your arm into the pad to create a more stable base for the bicep to pull against.
- Turn your pinky toward your shoulder at the top of the movement to maximize bicep peak contraction.
Make it harder
- Implement a 3-second pause at the bottom (the stretch position) to increase difficulty.
- Perform '1.5 reps' by doing a full rep followed by a half rep from the bottom to the midpoint.
Frequently asked
- What muscles does the dumbbell preacher curl work?
- The dumbbell preacher curl primarily targets the biceps.
- What equipment do you need for the dumbbell preacher curl?
- The dumbbell preacher curl uses dumbbell.
- Is the dumbbell preacher curl good for beginners?
- The dumbbell preacher curl is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.