Trunk rocks side to side with each alternating row
The body should stay still; rocking means the load is too heavy.
Overactive muscles
Erector spinaeQuadratus lumborum
Corrective work
Foam RollErector spinae↗StretchQL side-bend stretch↗The body should stay still; rocking means the load is too heavy.
The floor-contact arm is the stability base; lifting it removes the gorilla row advantage.