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Barbell Squat

The king of leg exercises — and arguably the most important movement in strength training. A squat is not about going down. It is about staying strong while you go down.

Primary: Quadriceps · Glutes Secondary: Hamstrings · Erector Spinae · Core Equipment: Barbell · Squat Rack Level: Intermediate
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Medical Clearance

Consult your GP before starting this or any exercise programme — particularly if you have knee, hip, or lower back issues. The information on this site is for educational purposes only. oldschoolPT accepts no liability for injury arising from use of this site.

Technique Diagram — Animated
Focus point standing parallel knees track toes Feet shoulder-width, toes out Weight through whole foot Bar mid-position on upper back Grip slightly wider than shoulders Chest up — find a point on the wall Keep eyes fixed — keeps back straight Sit into it — hips back and down Knees track over toes Thighs parallel — heels flat Can you move your toes? Good. Hold 1 second — breathe out, drive up Push through mid-foot and heels Never let knees cave inward Push knees slightly outward Never round the lower back Neutral spine throughout Animated stick figure — side view
Ready Reps: 0 Side view — barbell back squat

Step 1 — Set Your Stance

Foot Position Shoulder Width

Stand with feet shoulder-width apart, toes turned out slightly — roughly 15 to 30 degrees depending on your hip anatomy. Weight should be distributed evenly through the entire foot — not just the heels, not just the toes. A simple test: at the bottom of your squat, you should be able to wiggle your toes. If you cannot, your weight has shifted forward. Reset.

Bar Position Mid Upper Back

The bar sits across the upper back — not on the neck. The exact position varies by individual anatomy and preference. A mid-position on the upper traps works well for most people starting out. Grip the bar slightly wider than shoulder-width. The grip is there to stabilise the bar, not support it — the bar rests on your back, not your hands.

Step 2 — Brace Your Core

Intra-Abdominal Pressure Before Every Rep

Take a breath into your belly — not your chest. Brace your core as if bracing for a punch. This creates intra-abdominal pressure that stabilises the spine under load. Chest up, spine neutral. Hold this brace throughout the descent and drive — only breathe out at the top. Never relax the brace mid-rep.

Step 3 — The Descent

Sit Into It Hips Back and Down

Push the hips back and down simultaneously — think of sitting into a chair. Keep the chest up throughout. Find a fixed point on the wall ahead of you and keep your eyes on it for the entire set. This single cue — a fixed focal point — does more for keeping the torso upright and the back straight than almost any other coaching instruction. Use it every time.

Depth Thighs Parallel

Aim for thighs parallel to the floor. If mobility allows, slightly below parallel is excellent. Start with whatever depth you can achieve with good form — a shallow squat with perfect technique builds more strength and causes fewer injuries than a deep squat with a rounded back. Depth comes with time and consistent practice. Heels must stay flat throughout.

Step 4 — The Drive

Hold — Then Drive Through Heels

At the bottom, pause for one second. Then breathe out and drive upward — pushing through the mid-foot and heels, driving the hips forward. Stand tall at the top without leaning back. The pause removes the temptation to bounce out of the bottom position, which reduces the training stimulus and increases injury risk at the knee.

"A squat isn't about going down — it's about staying strong while you go down."

That is the cue I use with every client, at every level. The descent is not passive. Every inch of the way down should be controlled, braced, and deliberate. The strength you build in the descent is the strength that protects your knees and lower back for the rest of your life.

Build the Movement First

Before loading a barbell, learn the pattern. These beginner versions build the same movement with less risk:

Bodyweight Squat Start Here

Same pattern, no load. Arms extended forward for counterbalance. Practise until the movement feels natural and depth is consistent before adding any weight whatsoever.

Box Squat / Chair Squat Beginner

Squat down to a bench or box and pause briefly before driving back up. Gives a consistent depth reference and removes the fear of going too low. An excellent teaching tool for older beginners and anyone returning after a long break.

Goblet Squat Beginner — Intermediate

Hold a dumbbell or kettlebell at chest height. The counterbalance naturally encourages an upright torso and good depth. One of the best teaching tools for the squat pattern — many experienced trainers still use it as a warm-up movement.

The most common mistake in 30 years: Loading weight before learning the movement. Every single week, in every gym, people add plates to a bar they cannot yet squat properly with bodyweight. The injury that follows is entirely predictable. Build movement first. Weight follows.

Common Mistakes — In Order of How Often I See Them

1. Knees Caving Inward Most Common

The knees collapse toward each other on the descent or drive. Usually caused by weak glutes and poor neuromuscular control. Fix: actively push the knees slightly outward throughout the movement. Think about pushing your knees toward your little toe. Reduce the weight until the pattern is correct.

2. Heels Lifting Off the Floor Very Common

The heels rise as depth increases — almost always a result of poor ankle dorsiflexion. Fix: work on ankle mobility, or use a small heel raise under the heels as a temporary solution. Never squat with heels raised on plates long-term — address the underlying mobility restriction.

3. Rounding the Lower Back Common — Serious

The lower back rounds at the bottom — often called a butt wink. Under load this is a significant injury risk to the lumbar discs. Fix: reduce depth until it can be achieved without rounding. Brace the core harder. Reduce the weight. A shallow squat with a neutral spine is always preferable to a deep squat with a rounded one.

4. Squatting Too Shallow Common

A quarter squat is not a squat. Aim for parallel — thighs level with the floor. Shallow squats significantly reduce the training stimulus to the glutes and hamstrings, overload the knee in an inefficient position, and build a movement pattern that does not transfer to real-world function.

5. Excessive Forward Lean Common

The chest drops forward and the torso becomes almost horizontal. Shifts the load from the quads and glutes to the lower back. Fix: chest up, find the focal point on the wall, and keep eyes forward. Usually corrected immediately by the fixed focal point cue.