Trunk laterally flexes away from the cable on the press
QL and lateral trunk can't resist the lateral demand of the overhead press.
Overactive muscles
Quadratus lumborumTFL
Corrective work
Foam RollQuadratus lumborum↗StretchQL side-bend stretch↗QL and lateral trunk can't resist the lateral demand of the overhead press.
Upper trap assists the overhead press instead of core holding the position.