Exercise guide
Dumbbell Lying Supine Curl
- Beginner
- Isolation
- Rep-based
- Chest
- Upper arms
The Lying Supine Curl isolates the biceps by removing the ability to use momentum, providing a deep stretch at the bottom of the movement. This variation specifically targets the long head of the biceps for improved peak development and muscle thickness.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Lie flat on your back on a horizontal bench with your head and torso fully supported.
- Hold a dumbbell in each hand with your arms hanging straight down toward the floor off the sides of the bench.
- Position your palms so they are facing forward (supinated grip) and place your feet flat on the ground for stability.
How to do it
- Exhale and curl the weights toward your shoulders by flexing the elbows, keeping your upper arms stationary and perpendicular to the floor.
- Squeeze your biceps forcefully at the top of the movement for a one-second peak contraction.
- Inhale and slowly lower the dumbbells back to the starting position using a controlled 3-second tempo.
- Ensure your arms reach full extension at the bottom to maximize the stretch on the bicep fibers.
Form checklist
- Keep your elbows fixed in space; do not let them drift forward or backward as you curl.
- Maintain a flat back against the bench to prevent arching or using momentum.
- Keep your wrists neutral and avoid 'flipping' them at the top of the movement.
- Ensure the movement is slow and controlled, avoiding any swinging of the weights.
Pro tips
- Focus on driving your pinky fingers toward the ceiling at the top of the rep to maximize bicep supination and peak contraction.
- Imagine your upper arms are pinned to an invisible wall to ensure pure elbow flexion without shoulder involvement.
Make it harder
- Add a 3-second pause at the midpoint of the lowering phase to increase time under tension.
- Perform the movement unilaterally (one arm at a time) to increase the stability demand on your core and focus on the mind-muscle connection.
Frequently asked
- What muscles does the dumbbell lying supine curl work?
- The dumbbell lying supine curl primarily targets the biceps, and also works the abs and serratus anterior as secondary muscles.
- What equipment do you need for the dumbbell lying supine curl?
- The dumbbell lying supine curl uses dumbbell.
- Is the dumbbell lying supine curl good for beginners?
- Yes. The dumbbell lying supine curl is a beginner-friendly movement and a strong foundation to build on.