Rounding from the waist instead of hinging from the hip
Lumbar flexion substitutes for the hip hinge; hamstrings are not stretched.
Overactive muscles
HamstringsErector spinae
Corrective work
Foam RollHamstrings↗StretchHamstring stretch with strap↗Lumbar flexion substitutes for the hip hinge; hamstrings are not stretched.
Passive knee hyperextension under the forward fold.