Elbows stay forward — no W shape achieved
External rotation doesn't occur; rear delts and rotator cuff miss out.
Overactive muscles
Pec majorAnterior deltoid
Corrective work
Foam RollPectorals↗StretchDoorway pec stretch↗External rotation doesn't occur; rear delts and rotator cuff miss out.
Upper traps dominate rather than mid-traps and rear delts.