Knees lock completely
Hyperextended knees under load; hamstring attachment strained.
Overactive muscles
QuadricepsGastrocnemius
Corrective work
Foam RollCalves↗StretchWall calf stretch↗Hinge · Lower Body
Stiff-Leg Deadlift
Coaching cues
- Legs nearly locked — soft knee, not a hard lock
- Hinge from the hip; bar slides down the thighs
- Neutral spine maintained throughout — no rounding
- Drive hips forward to stand; glutes squeeze at top
Common faults 2
Lower back rounds
Hamstring flexibility deficit leads to lumbar flexion under load.
Overactive muscles
HamstringsLatissimus dorsi
Corrective work
Foam RollHamstrings↗Foam RollLats↗StretchHamstring stretch with strap↗