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exercise technique · fundamentals

How to squat, step by step.

The barbell back squat is the cornerstone lower-body lift in almost every results-driven program. This coach's guide covers the muscles it works, how to set up and perform a clean rep with proper bracing, the common mistakes and how to fix them, how to program it, and the variations worth knowing.

By Markus Evers · Updated June 2026

the short answer

The squat is a compound lower-body lift where you load a barbell across your upper back, sit down and back until your hips drop to at least knee height, then drive up to standing. It builds the quads, glutes, and core in one movement. The single most important cue is to brace hard and keep the bar balanced over your mid-foot through every rep.

This article is general technique education for coaches and clients, not medical or rehab advice - form is individual, and a qualified coach watching the movement and giving a form check is the gold standard. Clients with pain or a relevant history should clear it with a qualified professional first.

the anatomy

Muscles worked.

The squat earns its place because it loads so much muscle at once. As a compound exercise, it asks the whole lower body and a braced trunk to work together, which is what makes it one of the most efficient lifts a coach can program. The quads and glutes do most of the moving; everything else holds the position that lets them.

Muscle group What it does in the squat Coaching note
Quadriceps Drive the knees from a bent to a straight position out of the bottom. The prime movers; a deeper squat asks more of them, especially near the bottom.
Glutes Extend the hips to bring the torso back to upright as you stand. Heavily loaded out of the hole and at lockout; the engine for a strong drive up.
Hamstrings Help extend the hips and stabilise the knee alongside the quads. Work as co-contractors rather than prime movers, more so in a wider stance.
Adductors Stabilise the hips and assist hip extension, more so with a wider stance. Often underrated; a big contributor in low-bar and wide-stance squats.
Spinal erectors and core Keep the spine braced and the torso rigid against the load on the back. Do not move the weight, but hold the position that lets the legs do their job.
Calves Stabilise the ankle and balance the body over the mid-foot. Mobility here matters; stiff ankles often limit how deep a client can sit.

Which muscles get the most work shifts with stance and bar position. A more upright high-bar squat leans quad-dominant, while a wider stance or a low-bar setup pulls in more glute, hamstring, and adductor. None of that changes the core principle: the trunk braces, the hips and knees bend together, and the legs drive the load up.

step by step

How to squat, step by step.

A good squat is built from the ground up: a stable setup, a hard brace, a controlled descent, and a strong drive. These four steps cover the setup, the rep itself, and how bracing and breathing tie the whole movement together.

  1. 01

    Set the bar and your stance

    Position the bar on your upper back - across the traps for high-bar, a touch lower across the rear delts for low-bar - and grip it firmly to pin it in place. Unrack with a stable step or two back, set your feet roughly shoulder-width with toes turned out slightly, and find a stance where you can sit straight down without the heels lifting.

  2. 02

    Brace and take a breath before you descend

    Take a big breath into your belly and brace your core as if you are about to be punched in the stomach, creating pressure that supports the spine. This breath is taken at the top and held through the rep, not breathed out at the bottom. A solid brace is what keeps the torso rigid so the legs can transfer force.

  3. 03

    Sit down and back into the descent

    Lead by breaking at the hips and knees together, sitting down and slightly back as if lowering onto a low chair. Keep the bar tracking over your mid-foot, let the knees travel forward and out over the toes, and lower under control to at least the point where your hip crease drops to knee height.

  4. 04

    Drive up through the mid-foot

    From the bottom, push the floor away through your whole foot and drive your hips and chest up together so the bar travels in a straight vertical line. Keep your knees tracking out over your toes rather than caving in, and stand to full lockout with hips and knees extended before resetting for the next rep.

The breath is the part beginners most often miss. You take the big bracing breath standing at the top, hold it through the descent and the drive, and only exhale once you have stood back up - or near the top of the rep on heavier sets. Breathing out at the bottom collapses the pressure that protects the spine, which is why the brace and the breath are taught as one thing.

what to watch for

Common mistakes, and the fix.

Most squat faults trace back to one of three things: mobility, bracing, or simply too much weight. Here are the ones a coach sees most often and the cue or correction that fixes each. Remember that some variation in form is normal between bodies, so coach the pattern rather than chasing a single textbook shape.

Knees caving inward

The knees collapse toward each other under load, usually from weak hip stabilisers or cueing. Cue the client to push the knees out over the toes on the way up, and strengthen the glutes and adductors so the position holds without thinking about it.

Heels lifting off the floor

When the heels rise, the weight shifts onto the toes and balance and power are lost. This is usually ankle mobility or a stance that is too narrow - widen the stance slightly, turn the toes out, work on ankle mobility, or use a small heel elevation while it improves.

Rounding the lower back at the bottom

The pelvis tucks under and the lower back rounds at the bottom of the rep, often called a butt wink. Reduce depth to where the back stays neutral, reinforce the brace, and only deepen the range as control and mobility allow.

Letting the chest cave forward

The torso folds forward and the squat turns into a near good-morning, dumping the load onto the lower back. Cue the client to keep the chest proud and drive the hips and shoulders up at the same rate, and check the weight is not simply too heavy for the current brace.

Cutting depth short

Stopping well above parallel shortens the range and trains a smaller slice of the movement. Reduce the load and build to a depth where the hip crease reaches at least knee height with a neutral spine - quality depth beats a heavier partial rep for most goals.

putting it in a plan

How to program the squat.

The squat is usually the anchor of a lower-body or full-body day, programmed early in the session while the client is fresh enough to handle the load with good technique. How many sets and reps you assign comes down to the goal: heavier loads and lower reps around 3 to 6 lean toward strength, moderate reps around 6 to 12 are a reliable home base for muscle, and higher reps build endurance. Our guide to rep ranges for training breaks down where each range fits.

A common starting point is 3 to 5 working sets, then you grow the lift over time. That growth is progressive overload in action - adding a small amount of load or an extra rep week to week so the legs always have a reason to keep adapting. Because the squat is so demanding, watch the total training volume a client carries across the week and build it gradually rather than all at once.

When it is time to push the load, an estimate from the squat calculator helps you set the next jump and pick sensible working weights from a recent top set. Keep a rep or two in reserve on most sets so technique holds - the squat is one lift where grinding to true failure rarely pays off for general clients.

other ways to load it

Squat variations worth knowing.

The barbell back squat is the reference lift, but it is not the only way to train the pattern, and the right variation depends on a client's equipment, mobility, and goal. The goblet squat - a dumbbell or kettlebell held at the chest - is the best teaching tool there is, keeping the torso upright and grooving depth before a bar ever goes on the back. The front squat racks the bar across the front of the shoulders, demanding a more upright torso and shifting more work to the quads and core.

For clients who struggle to balance a bar, the hack squat and leg press let you load the legs heavily with the path fixed, which is useful for adding volume without taxing the brace. Single-leg work such as the Bulgarian split squat trains each side on its own, exposes left-to-right imbalances, and is gentler on the lower back while still loading the quads and glutes hard.

You do not need to use them all. Pick the variation that lets the client train the movement well with what they have, and rotate when a change of stimulus or a deload from heavy bar work is called for. Many of these are best treated as accessories that complement the main squat rather than replace it.

coaching it in practice

Program and track the squat for every client.

A great squat cue is only as good as how it reaches the client. The point of a coaching platform is to put the program, the form notes, and the logged numbers in one place, so the client knows what "more" looks like this week and you can see whether the lift is actually moving.

Build the squat with cues attached

The workout builder handles target loads, rep ranges, tempo, and a video demo on every exercise, so the bracing and depth cues from this guide ride along with the program the client opens.

Per-set logging and history

Clients log weight and reps on every working set in the client app, with last session's numbers shown next to today's - so progressive overload on the squat is obvious and a stall is easy to spot.

Form checks in the loop

Clients can send a video of their squat, and you can reply with the one cue that matters most that week - the form check that no calculator or note can replace stays part of the coaching relationship.

Coachway is built as the operating system for online fitness and nutrition coaches running roughly 10 to 80 clients, with the workout builder and per-set logging included on every plan. Pricing is EUR 69/mo for up to 5 clients, then EUR 9 per additional active client, so the tool cost stays predictable as your client list grows. See the full breakdown on the pricing page, or explore the workout builder to see how programming and tracking fit together.

questions coaches ask

Frequently asked questions.

How do you squat with proper form?

Set the bar on your upper back, take a stance about shoulder-width with toes turned out slightly, then take a big breath and brace your core. Sit down and back by breaking at the hips and knees together, keeping the bar over your mid-foot and the knees tracking over your toes, until your hip crease drops to at least knee height. Drive up through the whole foot to a full standing lockout. The single most important cue is to brace hard and keep the weight balanced over your mid-foot throughout.

How deep should you squat?

For most goals, aim to descend until the hip crease drops to at least the top of the knee - commonly called parallel - while keeping a neutral spine and your heels flat. Going deeper can be useful if a client has the mobility to do it with control, but a clean parallel squat beats a deep one that rounds the lower back or lifts the heels. Depth is individual, so the right target is the deepest range a client can own with good position.

What muscles does the squat work?

The barbell back squat is a compound lift that trains the quadriceps and glutes as the prime movers, with the hamstrings and adductors assisting hip extension and stabilising the hips and knees. The spinal erectors and core work hard to keep the torso braced and rigid under the load, and the calves help balance the body over the mid-foot. Because it loads so much muscle at once, the squat is one of the most efficient lower-body exercises a coach can program.

Should you squat high-bar or low-bar?

High-bar places the bar across the upper traps and keeps the torso more upright, which tends to suit a more quad-dominant squat and carries over well to general training. Low-bar sits the bar a touch lower on the rear delts and uses more forward lean and hip drive, which lets many lifters move more weight and suits powerlifting. Neither is universally better - pick the one that fits the client's goal, build, and which position they can brace and balance most comfortably.

How many sets and reps should you do for squats?

It depends on the goal. For strength, lower reps around 3 to 6 with heavier loads and longer rest work well; for muscle, moderate reps around 6 to 12 are a reliable home base; for endurance, higher reps above 12 fit. A common starting point is 3 to 5 working sets, then you progress over time by adding small amounts of load or a rep. The squat is demanding, so build volume gradually and keep enough in reserve to hold technique on every rep.

Is the squat safe for beginners?

The squat is a fundamental movement most beginners can learn, but form is individual and load should start light. Begin with bodyweight or a goblet squat to groove the pattern, add load only once the movement looks clean, and progress conservatively. Form varies with each person's build, mobility, and injury history, so the gold standard is a qualified coach watching the movement and giving a form check. This is technique education, not medical advice - clients with pain or a relevant history should clear it with a qualified professional first.

This article is general technique education for coaches and clients, not medical or rehab advice. Form is individual, and capacity, mobility, and injury history vary between people and change over time - a qualified coach watching the movement and giving a form check is the gold standard, and clients with pain or a relevant history should clear it with a qualified professional first.

To put a strong squat to work in a plan, pair clean technique with steady progressive overload and the right rep ranges for the goal.

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