Barbell Full Squat
- Target muscle
- Gluteus Maximus, Quadriceps
- Synergist muscles
- Adductor Magnus, Soleus
- Equipment
- Barbell
- Body part
- Thighs
- Type
- Strength
The barbell full squat is a foundational lower-body strength exercise that primarily targets the glutes (gluteus maximus) and quadriceps, with the adductor magnus and soleus assisting through the deep range. Squatting below parallel under a back-racked barbell builds full-depth leg and hip strength, making it a cornerstone movement for size and athletic power.
How to do the Barbell Full Squat
- 1Set the barbell in a rack at about mid-chest height and load it evenly. Position your hands and step under the bar.
- 2Rack the bar across your upper back: high-bar rests on the traps, low-bar sits lower across the rear delts. Pull your elbows down to lock the bar in place.
- 3Unrack the bar, take one or two steps back, and set your feet roughly shoulder-width apart with your toes turned out slightly.
- 4Brace your core, take a deep breath, and keep your chest up with a neutral spine.
- 5Bend at the hips and knees together, pushing your knees out over your toes as you descend under control.
- 6Lower until your hip crease drops below the top of your knees (below parallel), keeping your heels flat on the floor.
- 7Drive through your whole foot to stand back up, extending your hips and knees together until you reach a tall, locked-out position.
- 8Complete your reps, then step forward and re-rack the bar safely with control.
Form tips
- Always squat inside a power rack with the safety bars set just below your lowest depth, or use a spotter when training near your limit.
- Keep your weight balanced over your mid-foot and your heels planted throughout the rep.
- Choose your bar position to fit your goal: high-bar keeps the torso more upright and biases the quads, while low-bar lets you lean forward more and recruit the hips.
- Inhale and brace before you descend, holding the breath until you pass the hardest part of the drive up.
- Control the descent rather than dropping, then reverse smoothly out of the bottom.
Common mistakes
- Letting the knees cave inward as you stand up, which strains the knee ligaments and wastes the power of the glutes — cue your knees to track out over your toes.
- Rising onto the toes as your heels lift off the floor, which shifts the load forward and reduces stability and drive from the hips.
- Rounding the lower back at the bottom, which puts the spine at injury risk under load — keep your chest up and core braced.
- Cutting the squat short above parallel, which trains less of the glutes and quads and misses the full-depth strength the lift is meant to build.
- Pushing the knees too far forward while letting the hips stay high, which overloads the knees instead of sharing work with the hips.
Frequently asked questions
What muscles does the barbell full squat work?
It primarily works the glutes (gluteus maximus) and quadriceps, with the adductor magnus and soleus acting as synergists through the deep range of motion.
How wide should my stance be for the full squat?
Roughly shoulder-width with your toes turned out slightly is a solid default. Pushing your knees out to track over your toes lets you hit full depth comfortably.
What's the difference between a high-bar and low-bar squat?
High-bar rests the barbell on your traps and keeps your torso more upright, biasing the quads. Low-bar sits lower across your rear delts and lets you lean forward more, recruiting more hip and glute drive.
Is it safe to do barbell full squats without a spotter?
It can be, but squatting heavy alone is risky. Set the safety bars in a power rack just below your bottom position so you can bail safely, or have a spotter ready when you lift near your limit.
How deep should I squat?
A full squat means lowering until your hip crease drops below the top of your knees — below parallel — while keeping your heels flat and lower back neutral. That depth trains the glutes and quads through their fullest range.
