Hips sag on the explosive phase
Core fails during the explosive push; energy leaks through the hips.
Overactive muscles
Hip flexorsErector spinae
Corrective work
Foam RollHip flexors↗StretchHalf-kneeling hip flexor stretch↗Core fails during the explosive push; energy leaks through the hips.
Lacking explosive force; the push becomes a fast standard push-up.