Biceps Concentration Curl Variation (Hits Chest Too!)
Summary
Jeff Cavaliere of ATHLEAN-X presents a functional variation of the concentration curl that simultaneously targets the biceps and inner chest through adduction mechanics. Unlike the traditional concentration curl, this variation incorporates an explosive, athletic movement pattern that mimics real-world and sport-specific actions. The exercise capitalizes on the natural synergy between the chest and biceps, training them together as they are designed to function.
Key Points
- The biceps and chest have a natural functional synergy — they work together during activities like throwing punches, running, and explosive athletic movements, so they should be trained together
- The traditional concentration curl is considered ineffective because it lacks functional carryover and isolates the bicep in an unnatural, static position
- Chest adduction is the key mechanism — the inner chest’s primary role is to pull the arm across the body (adduction), and this exercise exploits that movement rather than forcing it through a flye position
- The exercise is performed in an athletic stance — leaning forward with the lower back set and legs loaded, not seated passively on a bench
- The movement has two distinct phases: first, sweep the straight arm across the body as high as possible using chest adduction; then finish by curling at the top to engage the biceps
- Explosiveness is a core training goal — the movement can be performed with power to develop first-step explosiveness, particularly relevant in sports like baseball (clearing the front side to drive movement)
- The inner chest is targeted without a risky extended flye position, making it a safer alternative for achieving adduction-based chest work
Exercise Details
Target Muscles
- Primary: Biceps, inner/upper chest (via adduction)
- Secondary: Core stabilizers, lower back (isometric engagement)
Proper Form Cues
- Start in an athletic forward-leaning stance with legs loaded and lower back braced
- Begin with the arm extended and low at the side
- Phase 1: Drive the arm across the body in a sweeping adduction motion, keeping it as straight as possible and bringing it as high as you can
- Phase 2: Once the arm has crossed the body, finish the movement with a curl at the top to fully contract the biceps
- Keep the lower back set and engaged throughout the entire movement
- Can be performed explosively to increase athletic carryover
Common Mistakes to Avoid
- Performing a standard straight curl without the cross-body adduction component (loses the chest involvement entirely)
- Skipping the curl finish at the top (reduces biceps recruitment)
- Neglecting lower back positioning — the athletic stance is essential to the functional intent of the movement
- Using a traditional flye arm position (arms extended wide) to target the chest — this is considered unnecessary and less efficient than adduction-based movements
Sets/Reps
- No specific sets or reps were mentioned in the transcript