Skipping the external rotation phase
Arms go straight from the row to the press; rotator cuff never engages.
Overactive muscles
Upper trapeziusAnterior deltoid
Corrective work
Foam RollUpper traps↗StretchLevator scapulae stretch↗Arms go straight from the row to the press; rotator cuff never engages.
Elbows should stay at shoulder height throughout the rotation.