Smith Hack Squat

How to do the Smith Hack Squat

1. 1Set the Smith machine bar to approximately mid-shin height and stand in front of it, facing away from the rack.
2. 2Step close to the bar so it rests against the back of your lower legs at calf level, with your feet shoulder-width apart and toes turned out 15–30°.
3. 3Hinge forward slightly, reach behind you, and grip the bar just outside your hips with an overhand grip.
4. 4Rotate the bar to unrack it, then stand tall with your torso upright and your core braced.
5. 5Push your hips back and bend your knees to lower your body, keeping the bar tracking along the backs of your legs and your chest up.
6. 6Descend until your thighs are parallel to the floor or as low as your mobility allows, without letting your lower back round.
7. 7Drive through your heels to extend your hips and knees, returning to the fully standing position under control.
8. 8Complete your reps, then rotate the bar to re-rack it securely on the Smith machine hooks.

Form tips

• Keep the bar in contact with the backs of your legs throughout the descent to stay true to the hack squat movement pattern and maintain quad tension.
• Push your knees out in line with your toes on every rep — allow the Smith machine's fixed path to guide the bar, but actively drive your knees wide to prevent them from caving inward.
• Lean your torso slightly forward from the hips as you descend; a completely rigid upright torso can strain the lower back when the bar is behind you.
• Control the descent for a 2–3 second count to maximize quad and glute tension before driving back up.

Common mistakes

• Letting the bar drift away from the backs of your legs, which turns the movement into a standard squat and reduces the unique quad emphasis of the hack squat pattern.
• Rounding the lower back at the bottom, which shifts load off the working muscles and onto the lumbar spine — stop the descent before your back rounds.
• Letting the knees cave inward as you drive up, which places harmful stress on the knee joints and reduces hip drive from the gluteus maximus and adductor magnus.
• Cutting the range of motion too short by stopping well above parallel, which limits quad and glute recruitment — descend until your thighs reach at least parallel unless mobility prevents it.
• Using too much weight and bouncing out of the bottom, which removes muscular tension and reduces control through the Smith machine's fixed track.

Frequently asked questions