Exercise Form and Technique Guide

Barbell Back Squat: A Coach's Guide

A note on your limitations. Painless knee clicking during deep flexion is common and usually harmless. Morning back stiffness and tight hips from sitting are also very typical. Stop and see a physiotherapist or sports medicine doctor if any of these happen:

• The click becomes painful, or your knee swells, locks, catches, or feels like it gives way.
• Back stiffness turns into pain that lasts through the day, radiates into your leg, or comes with numbness or tingling.
• You have high blood pressure or a cardiovascular condition. Heavy breath-holding (covered below) raises blood pressure sharply, so get clearance first.

1. Setup & Starting Position

Rack setup (before you touch the bar)

• J-hooks: Set them around mid-chest height. You should unrack with a slight knee bend, not tiptoes.
• Safety pins: Set them 2–5 cm below the bar's lowest point in your deepest squat. To test, squat the empty bar to depth inside the rack and adjust. The pins should catch a failed rep without clipping good ones.

Bar position

• High-bar: The bar sits on your upper traps, just below the bony bump at the base of your neck. This gives a more upright torso and more quad emphasis. It's the best default for a general strength and size goal.
• Low-bar: The bar sits 5–7 cm lower, across the rear delts on the "shelf" of your shoulder blades. This gives more forward lean, more hip and posterior chain work, and usually more weight lifted. It also demands more shoulder mobility.
• Pick one and stay with it. Switching often makes your groove inconsistent.

Grip & upper back

• Grip the bar as narrow as your shoulders comfortably allow, usually just outside shoulder width. A narrower grip makes a tighter upper back.
• Use a full grip with thumbs wrapped. Keep your wrists fairly straight, stacked over your elbows, not bent back holding the weight.
• Pull your elbows down and slightly back. This squeezes your shoulder blades together and builds a muscular "shelf" for the bar.

Unrack

• Step under the bar with both feet directly beneath it. A split stance loads one leg asymmetrically.
• Brace, then stand the bar straight up with both legs.
• Take 2–3 short steps back: one foot, then the other, then adjust. Don't wander.

Stance

• Heels roughly shoulder-width apart, slightly wider if your hips are tight.
• Toes turned out about 15–30°. Tight hips usually do better with a bit more turnout.
• Weight spread across the "tripod" of each foot: heel, big-toe base, and little-toe base.
• Flat shoes mean ankle mobility matters more. If your heels rise or you can't reach depth, putting small plates or wedges under your heels is a legitimate short-term fix. Weightlifting shoes are a longer-term option.

Spine & alignment

• Neutral spine: Keep your ribs stacked over your pelvis. No big arch, no rounding.
• Neutral neck: Fix your gaze on a spot on the floor 2–3 m ahead, or straight ahead. Don't crank your head up to the ceiling.
• Knees soft, not locked, at the top.

Setup cues

• Visual: "Bar over mid-foot." "Chest proud, ribs down." "Eyes on one spot."
• Feeling: "Bend the bar over your back." "Screw your feet into the floor." You should feel your outer hips switch on without your feet actually moving.
• Timing: Unrack, 3 steps, set feet, breathe, brace, go. Aim for the same routine every set, under about 10 seconds from unrack to first rep.

2. Movement Execution

Eccentric (lowering) phase

1. Breathe and brace at the top (see Section 3).
2. Break at hips and knees at the same time. Think "sit down between your heels," not "sit back into a chair" (which tips you forward) and not "knees first."
3. Push your knees out in line with your toes. Knees traveling forward past your toes is normal and safe. What matters is that they track over your feet and don't cave inward.
4. Keep the bar over mid-foot. Your torso angle is set by your build and bar position, so let it lean as needed. Just keep the bar path vertical.
5. Keep your chest and back angle steady. Hips and shoulders should descend together, with no folding.
6. Descend under control to depth.

Depth (range of motion)

• Target: Your hip crease just below the top of your knee ("below parallel"), or the deepest point where you can keep a neutral lower back and flat feet, whichever comes first.
• A small pelvic tuck at the very bottom ("butt wink") is normal. A large rounding under load is not. Film yourself from the side. If your low back visibly rounds, stop just above that point and build hip and ankle mobility.
• Your knee click: If it clicks without pain at the bottom, you don't need to avoid depth. If depth ever brings pain, limit range and get it checked.

Transition (the bottom)

7. Stay tight. Don't relax or "sit" in the hole. A small, controlled rebound is fine. A sloppy bounce where you drop and collapse is not.

Concentric (lifting) phase

8. Drive the floor away through the whole foot, not just the toes and not just the heels.
9. Chest and hips rise together. Lead with your upper back into the bar so your hips don't shoot up first.
10. Keep your knees out through the sticking point, usually a little above parallel.
11. Stand tall to finish. Squeeze your glutes lightly to lock out, but don't thrust your hips forward or lean back.
12. Reset your breath and brace before the next rep.

Tempo

• Lowering: 2–3 seconds, controlled.
• Bottom: No pause (or a brief one), no bounce.
• Lifting: As fast as possible while keeping position. Intent to accelerate matters even when the bar moves slowly.
• Top: 1–2 seconds to reset your breath.

Execution cues

• Visual: "Knees track over your toes." "Bar moves straight up and down." "Hips and chest rise together."
• Feeling: "Spread the floor." "Push your back into the bar." Your quads and glutes should feel loaded at the bottom, like a spring.
• Timing: "Down 2-3, drive up." Control down, explode up.

3. Breathing Pattern

For heavy sets of 5, use a brace-and-hold breath each rep, a controlled form of the Valsalva maneuver.

1. At the top, before each rep: Take a big breath into your belly and sides, about 70–80% of a full breath, not a maximal gasp. Your belt line should expand 360°. If only your chest and shoulders rise, you're breathing too high.
2. Brace: Tighten your trunk as if someone were about to punch your stomach, and hold the breath.
3. Descend and ascend holding that breath and brace.
4. Exhale at the top, or just past the sticking point with a controlled "tss" through tight lips. Don't dump all your air at the bottom.
5. Re-breathe and re-brace before the next rep. Take one breath per rep. Take 2 if you need them, but stay braced while you do.

• Belt (optional): At heavier loads, a belt gives your abs something to push against. Learn to brace without it first. It's a tool, not a fix.
• Warning: If you feel dizzy, see spots, or get a headache during sets, rack the bar, shorten your breath holds, and get checked if it continues.

4. Key Form Cues

1. "Tripod feet." Grip the floor with heel, big toe, and little toe.
2. "Big breath, brace the belt." Fill 360° and lock it.
3. "Sit between your heels." Straight down, not back.
4. "Knees out over toes." Push them where your toes point.
5. "Chest and hips rise together." No good-morning squat.
6. "Bar over mid-foot." A vertical bar path is an efficient bar path.

5. Common Mistakes

6. Muscle Engagement

Primary movers

• Quadriceps (front thigh) extend the knee.
  • Feeling: Your thighs feel loaded and tight at the bottom, and "burn" through the middle of the lift.
• Gluteus maximus extends the hip, especially out of the hole.
  • Feeling: Deep glute stretch at depth. A firm squeeze on lockout.
• Adductor magnus (inner thigh) is a powerful hip extender at depth.
  • Feeling: Inner-thigh tension and a stretch near the bottom. Soreness here the next day is normal.

Stabilizers & synergists

• Spinal erectors hold your spine neutral.
  • Feeling: Firm, even tension along both sides of your spine. It should not feel pinchy or painful.
• Deep core (transverse abdominis, obliques, diaphragm, pelvic floor) creates bracing pressure.
  • Feeling: A 360° pressure, like a pushed-out belt, around your whole waist.
• Glute medius (outer hips) keeps knees tracking over toes.
  • Feeling: Your outer hips switch on when you cue "spread the floor."
• Hamstrings stabilize the hips and knees, playing a minor mover role.
  • Feeling: Light tension at the back of your thighs, not a strong stretch.
• Upper back (traps, rhomboids, lats) supports the bar and keeps your chest from caving forward.
  • Feeling: Shoulder blades squeezed, lats "pulling the bar into your back."
• Calves & feet give you balance and a solid base.
  • Feeling: Your feet feel "rooted," gripping the floor.

Soreness guide: Quads, glutes, and inner thighs should feel worked. If your lower back is the main thing that's sore or pumped, your form is likely off (leaning, hips shooting up, or losing brace).

7. Progressions & Regressions

Regressions (build or rebuild the pattern)

• Goblet squat: A front-loaded dumbbell or kettlebell teaches an upright torso, depth, and knees out. It's also a great warm-up for tight hips.
• Box squat: Squat to a box at or just below parallel. It builds consistent depth and confidence. Touch the box lightly without sitting back and relaxing.
• Tempo back squat (3-1-1): 3 s down, 1 s pause, 1 s up, at 50–65% of your working weight. It exposes weak positions.

Progressions (advance once your technique is solid)

• Paused back squat: A 2–3 s pause at the bottom kills the bounce and builds strength out of the hole. It's excellent for your 100 kg goal.
• Front squat: Demands an upright torso and strong quads and upper back. It fixes forward-lean habits.
• Pin squat: Start from the pins at your sticking point. It builds strength from a dead stop in a specific range.

Programming tips toward 100 kg × 5

• Add weight gradually: 2.5 kg per session, or per week once linear gains stall. Microplates help at intermediate levels.
• Sessions: Squat 2–3 times per week, with 1 heavy day (sets of 5) and 1 lighter technique or variation day (paused or tempo squats).
• Sets: Leave 1–2 reps in reserve on most sets. Grinding to failure isn't needed for strength or size.
• Deload: Every 4–8 weeks, or when multiple sessions stall.

8. Safety & Self-Check

Warm-up (about 10–15 minutes)

With morning stiffness, consider training later in the day if possible. If you train early, extend the warm-up.

1. General: 5 min on a bike, rower, or brisk walk, until you're lightly sweating.
2. Mobility (for tight hips, ankles, and back):
   • Couch stretch or kneeling hip flexor stretch: 30–45 s per side.
   • 90/90 hip switches: 8–10 reps.
   • Knee-to-wall ankle rocks: 10 per side.
   • Cat-camel: 8–10 slow reps.
   • Deep bodyweight squat hold with light rocking: 30–60 s.
3. Activation: Glute bridges or banded lateral walks, 1–2 sets of 10–15.
4. Ramp-up sets (example for a 90 kg working weight):
   • Empty bar × 8–10
   • 40 kg × 5
   • 60 kg × 3
   • 75 kg × 2
   • 85 kg × 1
   • Working sets

Warning signs: stop the set

• Sharp, stabbing, or pinching pain anywhere, especially the lower back or knee.
• Pain that radiates into your buttock or down your leg, or numbness or tingling.
• A knee click that becomes painful, or knee swelling, locking, catching, or giving way.
• Dizziness, visual disturbance, or a sudden headache.
• Form breaking down noticeably: knees caving, hips shooting up, or losing depth. End the set. A missed rep is fine; a bad rep isn't.
• Failing safely: Squat down onto the pins and lower the bar onto them, then crawl out. That's what they're for.

Persistent pain (lasting 48+ hours or getting worse) means see a professional before your next squat session.

Pre-set checklist

• Pins at the right height, collars on, plates loaded evenly
• Bar centered on your back, even grip
• Elbows down, upper back tight
• Feet set: tripod, width and turnout consistent
• Breath into belly, brace locked
• Gaze fixed

Quick Cheat Sheet

1. Tripod feet, big breath, brace the belt.
2. Sit between your heels, knees out over toes, bar over mid-foot.
3. Drive the floor away, chest and hips rise together.