Trunk rises to assist
Erectors extend the spine to help the arm move.
Overactive muscles
Erector spinaeUpper trapezius
Corrective work
Foam RollErector spinae↗StretchHalf-kneeling hip flexor stretch↗Pull · Upper Body
Prone Cable Rear Delt Raise
Coaching cues
- Lie prone on an incline bench; cable at floor level; one arm hangs
- Raise the arm in a wide arc to shoulder height — rear delt emphasis
- Slight elbow bend; pause at the top
- Lower under control — 3-second eccentric
Common faults 2
Shoulder shrugs at peak
Upper trap fires instead of posterior delt contracting.
Overactive muscles
Upper trapeziusLevator scapulae
Corrective work
Foam RollUpper traps↗StretchLevator scapulae stretch↗