Trunk rotates toward the cable
Body twists to assist the fly; pec loses the load.
Overactive muscles
ObliquesLatissimus dorsi
Corrective work
Foam RollLats↗StretchQL side-bend stretch↗Push · Upper Body
Single-Arm Cable Chest Fly
Coaching cues
- Stand beside the cable; one arm extended holding the handle
- Fly the arm across the body — horizontal adduction
- Resist trunk rotation — core braced hard
- Control the return; full stretch at end range
Common faults 2
Shoulder shrugs during the fly
Upper trap elevates; pec minor and anterior delt dominate.
Overactive muscles
Upper trapeziusPec minor
Corrective work
Foam RollUpper traps↗StretchLevator scapulae stretch↗