Shoulders shrug at lockout
Upper traps elevate instead of the press finishing through serratus and lower traps.
Overactive muscles
Upper trapeziusLevator scapulae
Corrective work
Foam RollUpper traps↗StretchLevator scapulae stretch↗Upper traps elevate instead of the press finishing through serratus and lower traps.
Lower back arches to help drive the weights overhead.
No rotation occurs; becomes a standard press without the shoulder activation benefit.