Elbows flare to 90 degrees
Anterior capsule is stressed; pec loses the optimal line of pull.
Overactive muscles
Anterior deltoidPec minor
Corrective work
Foam RollPectorals↗StretchDoorway pec stretch↗Anterior capsule is stressed; pec loses the optimal line of pull.
The arch is fine but hips lifting is a competition technique not a training one.
Momentum replaces pec strength at the bottom; eccentric benefit is lost.