Movement overview

The Dumbbell Supinated Preacher Curl is an isolation exercise targeting the biceps brachii, specifically emphasizing the short head. It involves curling a dumbbell with a supinated grip (palms facing up) while seated at a preacher bench, which stabilizes the upper arm and minimizes the involvement of other muscle groups.

Step-by-step cues

1. Adjust the preacher bench so that your upper arms rest comfortably on the pad with your armpits at the top edge.
2. Sit down and hold a dumbbell in one hand with a supinated grip (palm facing up).
3. Extend your arm fully, allowing the dumbbell to hang down without locking your elbow.
4. Curl the dumbbell upwards by contracting your biceps, keeping your upper arm stationary against the pad.
5. Continue curling until your biceps are fully contracted and the dumbbell is at shoulder level.
6. Pause briefly at the top of the movement, squeezing your biceps.
7. Slowly lower the dumbbell back to the starting position, maintaining control throughout.
8. Repeat for the desired number of repetitions, then switch arms.

Technical tips

• Ensure your upper arms remain in contact with the pad throughout the exercise to isolate the biceps effectively.
• Focus on using a slow and controlled motion to maximize muscle tension and prevent momentum from assisting in the lift.
• Avoid locking out your elbows at the bottom of the movement to maintain continuous tension on the biceps.
• Exhale as you curl the weight up and inhale as you lower it back down.
• Start with a lighter weight to perfect your form before progressing to heavier dumbbells.
• Keep your wrist straight and aligned with your forearm to prevent strain or injury.