Lower back rounds on the hinge
Hamstring inflexibility causes lumbar flexion under the Smith load.
Overactive muscles
HamstringsLatissimus dorsi
Corrective work
Foam RollHamstrings↗StretchHamstring stretch with strap↗Hinge · Full Body
Smith Machine Good Morning
Coaching cues
- Bar on the upper back; fixed Smith path guides the movement
- Hinge at the hip — push hips back; maintain a neutral spine
- Lower until the trunk is just above parallel; drive hips forward to return
- Lighter load with more confidence than a barbell good morning
Common faults 2
Leaning into the bar — fighting the Smith path
The fixed bar path restricts the ideal hinge arc; lighter weight needed.
Overactive muscles
Erector spinaeHip flexors
Corrective work
Foam RollHip flexors↗StretchHalf-kneeling hip flexor stretch↗