Elbows drift down from the high position
The overhead elbow angle is the key feature; dropping removes the bicep long head stretch.
Overactive muscles
Latissimus dorsiTeres major
Corrective work
Foam RollLats↗StretchLat stretch (kneeling overhead)↗The overhead elbow angle is the key feature; dropping removes the bicep long head stretch.
Momentum replaces bicep strength; reduce the angle.