Barbell Back Squat — how to, muscles worked, alternatives

How to do the Barbell Back Squat

Place the barbell in a rack and step under it, gripping the bar firmly.
Stand tall and lift the bar off the rack, then step back a few paces.
Stand with feet shoulder-width apart, toes slightly outward, to find your balance.
Lower until your hips reach at least knee level without letting your torso fold forward.
Press back up to a standing position, straightening your legs and hips fully.

Full technique — 8 steps

Set the bar in a rack just below shoulder height and step underneath it.
Place the bar across your upper traps or rear delts, then grip it evenly.
Stand tall to unrack the bar, then take two to three controlled steps back.
Set your feet about shoulder width, turn toes slightly out, and balance over the middle of your foot.
Tighten your stomach and upper back, then begin by bending hips and knees together.
Squat down until your hips reach at least knee level without losing position.
Drive upward through your whole foot, keeping your knees pointing the same way as your feet and chest rising with hips.
Stand to full hip and knee extension, then stabilize before starting the next rep.

Common mistakes

Bar resting on the neck
Knees collapsing inward on ascent
Heels lifting at the bottom
Hips shooting up first
Cutting the squat high

Form cues

Tighten stomach each rep
Drive through whole foot
Knees point where feet point
Balance over middle of foot
Drive up together

Compared with similar variants

	Barbell Back Squat	Hack Squat (Machine)	Low Bar Back Squat	Goblet Squat
Level	Intermediate	Intermediate	Advanced	Beginner
Technique to learn	hard	easy	hard	easy
How tiring	high	moderate	high	moderate
Lower back	high	low	high	low
Knee	high	high	moderate	moderate
Equipment	Barbell, Squat rack	Hack squat machine	Barbell, Squat rack	Dumbbells, Kettlebell

An estimate from our exercise ratings, not medical advice. How we rate exercises

Substitutes by equipment

Same muscles, same movement — pick the version you have the gear for.

Where to start and where to go next

Same muscles, same movement. Too hard for now — step down; once it gets easy — step up.

Easier Box Squat Beginner
Easier Barbell Front Box Squat Intermediate
This exercise Barbell Back Squat Intermediate
Harder Low Bar Back Squat Advanced
Harder Barbell Overhead Squat Advanced

Too hard for now? Start with the Barbell Front Box Squat.

In ready-made workouts

Barbell strength workout40 min · Gym

Quick answers

What muscles does the Barbell Back Squat work?

Primary: Quads 9/10. Also works: Glutes 8/10, Hamstrings 4/10, Lower back 4/10, Abs 4/10.

Which joints does the Barbell Back Squat load?

Lower back: high, Knee: high, Hip: moderate, Shoulder: low. Lower back — lighter options: Hack Squat (Machine), Goblet Squat, Smith Machine Squat.

When should I do the Barbell Back Squat in a workout?

Main lift. Goes first after the warm-up, while you are fresh. ≈ 14 min with rest.

How many sets and reps of the Barbell Back Squat?

Strength: 4–5 sets of 3–5 reps, rest 2 min 30 s, 1–2 reps in reserve. Muscle growth: 3–4 sets of 6–10 reps, rest 1 min 30 s, 2–3 reps in reserve. Power: 3–6 sets of 1–5 reps, rest 3 min, 2 reps in reserve. Endurance: 2–3 sets of 15–20 reps, rest 1 min, 4 reps in reserve.

What can I do instead of the Barbell Back Squat?

Dumbbells: Dumbbell Squat, Dumbbell Box Squat. Machine: Leg Press, Smith Machine Squat. Kettlebell: Kettlebell Goblet Squat, Goblet Squat. Cable machine: Cable Squat.