How to do back squats correctly?

To do a back squat correctly, rest the bar across your upper traps or rear delts, unrack it, and step back into a shoulder-width stance with toes turned slightly out. Brace your core, push your hips back, and descend until your hip crease drops below your knee, keeping your chest up before driving through the middle of your foot to stand back up.

Is a barbell back squat good?

Yes, the barbell back squat is one of the best exercises for building total lower-body strength and size, loading the quads, glutes, hamstrings, and core simultaneously. The strength you build carries over to almost every other lift and athletic movement, which is why it anchors most well-designed strength programs.

What is the difference between a back squat and a regular squat?

A back squat specifically refers to squatting with a barbell loaded across your upper back, either high-bar on the traps or low-bar on the rear delts, while a regular squat can mean any squat variation, including bodyweight or front-loaded versions. The back squat allows the heaviest loading of the common squat variations.

What does a bar back squat work?

The barbell back squat works the quadriceps, glutes, and hamstrings as the primary movers, with the core bracing hard throughout to stabilize the spine under load. It trains more total lower-body muscle mass in one movement than almost any other exercise, which is why it is considered a foundational strength lift.

Back squat vs front squat: what's the difference?

The back squat loads the bar across your upper traps or rear delts, allowing the heaviest loading and the most total posterior-chain involvement. The front squat racks the bar across your front delts and collarbone, forcing a more upright torso that shifts emphasis onto the quads and core while reducing lower-back shear. Most lifters can back squat more weight than they can front squat.

Barbell Back Squat: Form & Muscles Worked

Barbell Back Squat

How to do the barbell back squat with correct form: setup, bar position, depth, and the most common mistakes that limit strength and cause injury.

Quick answer: Set the bar across the upper back, brace, squat to a controlled depth, and stand by driving through the whole foot.

Barbell, squat rack intermediate Quadriceps, Glutes, Hamstrings, Core

How to Do It

Set the bar in a rack at roughly chest height. Step under it and rest the bar across your upper traps (high-bar) or rear delts (low-bar), not directly on your neck.

Grip the bar just outside shoulder width, unrack it, and take two or three steps back into your stance, feet shoulder-width apart with toes turned slightly out.

Brace your core by taking a deep breath into your belly, then initiate the squat by pushing your hips back and bending your knees together.

Descend until your hip crease drops below your knee (at least parallel), keeping your chest up and knees tracking over your toes.

Drive through the middle of your foot to stand back up, exhaling as you pass the hardest part of the rep.

Common Mistakes

Knees caving inward on the way up, usually from weak glutes or going too heavy too soon.

Losing the neutral spine and rounding the lower back at the bottom of the squat.

Rising onto the toes instead of driving through the whole foot, which shifts load off the glutes and onto the knees.

Not hitting depth consistently, which shortchanges the quads and glutes of their full range of motion.

The back squat is the single best exercise for building total lower body strength and size. It loads the quads, glutes, hamstrings, and core simultaneously, and the strength you build here carries over to almost every other lift and athletic movement.

Depth matters more than most lifters realize. A quarter squat with a heavy bar builds less muscle and strength than a full-depth squat with a lighter one, because the muscles never get loaded through their full range. Chase depth before you chase weight.

If you’re building a full lower body session around this movement, pair it with a hip hinge (like the Romanian deadlift) and a single-leg movement to cover all the angles your legs need. New lifters who aren’t ready for a barbell should learn the pattern first with a goblet squat.

Back Squat vs Front Squat

Both squats train the same muscles through the same basic pattern, but bar position changes the demand. The back squat rests the bar across your upper traps or rear delts, letting your torso lean forward more and load the posterior chain harder, which is why it’s usually the heavier lift for a given lifter. The front squat racks the bar across your front delts and collarbone, which forces a more upright torso, shortens the range your hips travel back, and shifts more emphasis onto the quads and core.

	Back Squat	Front Squat
Bar position	Upper traps or rear delts	Front delts and collarbone
Torso angle	More forward lean	More upright
Loading potential	Higher	Lower, limited by rack position
Emphasis	Glutes, hamstrings, quads	Quads, core

Most strength programs build around the back squat and use the front squat as an accessory to reinforce upright posture and quad strength.[1][2]

Muscles Worked by the Barbell Back Squat

Primary: quadriceps, glutes
Secondary: hamstrings, adductors
Stabilizers: core and lower back, bracing hard to keep the spine neutral under load[1][2]

Barbell Back Squat Alternatives

Goblet squat: a lighter, front-loaded regression that’s easier to learn depth and bracing with before adding a barbell.
Front squat: shifts more of the load onto the quads and core with a more upright torso.[1][2]
Bulgarian split squat: a single-leg alternative that adds a balance demand and trains each leg independently.
Leg press: a machine substitute that removes the balance and bracing demand, useful for pushing the quads and glutes hard without spinal loading.

Regressions

Goblet Squat: Front loading can make depth and bracing easier to learn.

Alternatives

Split Squat: A unilateral lower-body alternative when a rack is unavailable.

Programs Using This Exercise

References

National Strength and Conditioning Association. Anaerobic and Muscle Endurance Development: Lifting Guidelines. National Strength and Conditioning Association (2017)Back to claim
Brad S Currier, Alysha C D'Souza, Maria A Fiatarone Singh, Caroline V Lowisz, Eric S Rawson, Brad J Schoenfeld, Abbie E Smith-Ryan, Jeremy P Steen, Gwendolyn A Thomas, N Travis Triplett, Tyrone A Washington, Timothy J Werner, Stuart M Phillips. American College of Sports Medicine Position Stand. Resistance Training Prescription for Muscle Function, Hypertrophy, and Physical Performance in Healthy Adults: An Overview of Reviews. Medicine & Science in Sports & Exercise (2026)Back to claim
Deborah Riebe, Barry A Franklin, Paul D Thompson, Carol E Garber, George P Whitfield, Melissa Magal, Linda S Pescatello. Updating ACSM's Recommendations for Exercise Preparticipation Health Screening. Medicine & Science in Sports & Exercise (2015)

See our exercise methodology for how this evidence is applied and its limits.

Frequently Asked Questions

How to do back squats correctly?: To do a back squat correctly, rest the bar across your upper traps or rear delts, unrack it, and step back into a shoulder-width stance with toes turned slightly out. Brace your core, push your hips back, and descend until your hip crease drops below your knee, keeping your chest up before driving through the middle of your foot to stand back up.
Is a barbell back squat good?: Yes, the barbell back squat is one of the best exercises for building total lower-body strength and size, loading the quads, glutes, hamstrings, and core simultaneously. The strength you build carries over to almost every other lift and athletic movement, which is why it anchors most well-designed strength programs.
What is the difference between a back squat and a regular squat?: A back squat specifically refers to squatting with a barbell loaded across your upper back, either high-bar on the traps or low-bar on the rear delts, while a regular squat can mean any squat variation, including bodyweight or front-loaded versions. The back squat allows the heaviest loading of the common squat variations.
What are common back squat mistakes?: Common back squat mistakes include knees caving inward on the way up, usually from weak glutes or going too heavy too soon, losing the neutral spine and rounding the lower back at the bottom, rising onto the toes instead of driving through the whole foot, and not hitting consistent depth, which shortchanges the quads and glutes.
What does a bar back squat work?: The barbell back squat works the quadriceps, glutes, and hamstrings as the primary movers, with the core bracing hard throughout to stabilize the spine under load. It trains more total lower-body muscle mass in one movement than almost any other exercise, which is why it is considered a foundational strength lift.
Back squat vs front squat: what's the difference?: The back squat loads the bar across your upper traps or rear delts, allowing the heaviest loading and the most total posterior-chain involvement. The front squat racks the bar across your front delts and collarbone, forcing a more upright torso that shifts emphasis onto the quads and core while reducing lower-back shear. Most lifters can back squat more weight than they can front squat.