Barbell Full Squat
The full squat takes the standard back squat all the way down, past parallel until your hip crease drops below your knee, before standing back up. That extra depth means your quads and glutes travel through a longer range of motion than a squat stopped at parallel, which is why it's often used by lifters chasing more muscle growth or better hip and ankle mobility, not just a bigger number on the bar.
Why it works
Squatting to full depth stretches the quadriceps and glutes under load through their complete range before they have to contract and drive you back up. That longer stretch under tension is one of the main reasons deep squats tend to build more muscle than partial-range versions at the same weight. The calves, hamstrings, and lower back get pulled in as secondary stabilizers, the calves and hamstrings to help control the bottom position, and the lower back to keep your spine rigid as your torso leans forward slightly to stay balanced over the bar.
Set up
- Set the bar on your upper traps, gripping it just outside shoulder width.
- Unrack the bar and step back with your feet roughly shoulder-width apart, toes turned out slightly.
- Brace your core and take a breath before your knees start to bend.
- Keep your chest up and your eyes forward, not down at the floor.
How to do it
- Bend your hips and knees together, sitting your hips back and down as if reaching for a low chair.
- Keep your knees tracking in the same direction as your toes as you descend.
- Continue down until your hip crease drops below the top of your knee, your full depth.
- Drive through your whole foot to reverse the movement, keeping your chest up as you stand.
- Finish standing tall with your hips fully extended before starting the next rep.
Form cues
- Sit back and down, don't just bend forward.
- Knees track over your toes, not caving in.
- Chest stays up through the whole descent.
- Drive through the whole foot to stand.
Breathing: Inhale and brace before you descend, hold that brace through the bottom position, then exhale as you drive back up to standing.
Common mistakes
The lower back rounding at the bottom of the squat, often called butt wink.
Fix: Work on ankle and hip mobility and reduce depth slightly until you can reach full depth with a neutral spine, then build depth back gradually.
Knees caving inward as you stand up out of the bottom, especially on harder reps.
Fix: Cue your knees to push out toward your toes throughout the rep, and consider lighter weight while you rebuild that pattern.
Rising onto the toes or heels lifting off the floor during the descent.
Fix: Spread the floor apart with your feet and keep weight balanced across your whole foot rather than shifting forward onto your toes.
How to program it
- Because full depth adds real time under tension and joint stress, once a week as your main squat session lets the knees, hips, and lower back fully recover between sessions.
- 3 to 5 sets of 4 to 8 reps at a challenging but controlled weight builds strength and size well for most lifters.
- Schedule the full squat early in a lower-body session while your hip and ankle mobility are freshest for reaching true depth.
- Pair it with hip flexor and ankle mobility work beforehand if reaching full depth with a flat back is still a struggle.
Safety notes
- Build ankle and hip mobility before adding heavy load; depth that comes from a rounded lower back is worse than stopping a few inches higher.
- Use a spotter or safety pins set just below your depth when working with heavier weights.
Exercise profile
- Force
- Push
- Mechanics
- Compound
- Category
- Strength
Frequently asked questions
How many sets and reps should I do for full squats?
3 to 5 sets of 4 to 8 reps at a challenging but controlled weight works well for most lifters chasing strength and size together.
How often should I do full squats?
Once a week as your main heavy squat session is enough for most lifters, since the added depth means more joint stress and recovery time than a parallel squat.
Is squatting below parallel bad for your knees?
For most healthy knees, full-depth squatting isn't inherently harder on the joint than a parallel squat, as long as the depth comes from good hip and ankle mobility rather than a rounding lower back.
Full squat vs front squat: what's the difference?
The full squat holds the bar across your upper back, while the front squat rests it across the front of your shoulders. The front position forces an even more upright torso and shifts more of the work onto your quads and core.
Can I do a full squat at home without a barbell?
The goblet squat holds a weight at your chest instead of on your back, which naturally keeps you upright and is an easier way to build full-depth comfort before loading a barbell.
Why can't I reach full depth without my heels lifting?
That's almost always limited ankle mobility, not a hip or flexibility problem elsewhere. Try squatting with a small plate or wedge under your heels while you build ankle range separately, and reassess depth without the wedge every few weeks.