Quick Answer
Hack Squat is a beginner strength exercise that targets your quadriceps. It uses a machine. Position self on hack squat machine, back against pad, shoulders under pads.
Video Tutorial
How to Perform the Hack Squat
- 1
Position self on hack squat machine, back against pad, shoulders under pads.
- 2
Feet shoulder-width on platform, toes slightly out.
- 3
Grip handles, release safety bars.
- 4
Start legs extended (not locked).
- 5
Inhale, slowly lower platform by bending knees.
- 6
Descend until thighs below parallel.
- 7
Keep back against pad.
- 8
Exhale, push through heels to return to start.
- 9
Repeat.
Common Mistakes to Avoid
- !Rushing reps instead of controlling the lowering (eccentric) phase — aim for 2–3 seconds down.
- !Letting form break down as reps add up. Stop the set when technique slips, not when you physically can't do another rep.
- !Letting knees cave inward (valgus) — track them in line with your second toe throughout the rep.
Tips for Better Form
- ✓Breathe out during the effort (concentric) and breathe in on the return (eccentric).
- ✓Use a mirror or film yourself on your first session — your perceived form and actual form often differ.
- ✓Brace your core as if someone were about to punch you in the stomach. This stabilizes your spine in every rep.
- ✓Don't worry about load — master the movement pattern with light weight or easier variations first.
Alternative Exercises
If the Hack Squat isn't right for your body, equipment, or goal, try these similar exercises that hit the same muscle groups:
Frequently Asked Questions
What muscles does the Hack Squat work?
The Hack Squat primarily works your quadriceps. Secondary muscles include the calves, glutes and hamstrings.
What equipment do I need for the Hack Squat?
The Hack Squat needs a machine. You can perform it at home or at the gym as long as you have what's listed.
Is the Hack Squat suitable for beginners?
Yes. The Hack Squat is a beginner-level exercise. Start with lighter load or fewer reps and focus on form before adding intensity.
How many sets and reps of Hack Squat should I do?
For strength: 3–5 sets of 3–6 reps with longer rest (2–3 min). For hypertrophy (muscle growth): 3–4 sets of 8–12 reps with moderate rest (60–90 sec). For endurance: 2–3 sets of 15+ reps with short rest (30–45 sec). Adjust based on your program and goal.
Can I do the Hack Squat every day?
No. Muscles need 48 hours to recover between heavy training sessions. If you want to train quadriceps more frequently, alternate harder and easier variations and keep overall weekly volume moderate.