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The Back Squat: The One Lift That Rewrites Your Body From the Ground Up
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Big 3 · TechniqueJuly 2026·12 min read

The Back Squat: The One Lift That Rewrites Your Body From the Ground Up

No exercise builds more total-body strength, size, and grit than a heavy back squat. And no exercise gets more misinterpreted. Here's the exact stance, brace, descent and drive we teach every Onyx lifter, from first-week beginners to seasoned powerlifters.

Simen Christiansen

Simen Christiansen

Onyx Head Coach

Shoulders-1.5x

Stance width

Hip crease < knee

Depth

Every rep

Brace 360°

Vertical over midfoot

Bar path

The back squat is the most demanding lift in the gym. Not because it is complicated - it isn't - but because it demands full-body coordination under real load. Learn to squat well and every other lower-body movement gets easier. Learn to squat badly and your knees, back, and hips will remind you for years.

- The setup

01Rack height, bar position, and the unrack

The lift begins before you unrack. J-hooks should sit so the bar is roughly at mid-sternum height when you're standing tall. Too high and you tiptoe out. Too low and you burn a quarter-squat of energy just clearing the rack.

Bar position - high bar vs low bar

  • High bar: bar on top of the traps, torso more upright, more quad-dominant, easier to learn
  • Low bar: bar across the rear delts, more forward lean, more hip-dominant, moves the most weight
  • Beginners: start high bar for 6-12 months. Migrate to low bar only if the sport demands it

- Stance and brace

02Where your feet go, and how to breathe into a belt

  • Feet roughly shoulder-width to 1.5x shoulder-width for most lifters
  • Toes turned out 15-30° - pick the angle where your hip lets you sink to depth without the knee caving
  • Weight distributed across the whole foot: heel, ball, pinky toe - the 'tripod'
  • Big toe glued to the floor at all times - it drives external rotation of the hip
"You cannot squat heavy weights with a weak brace. The brace is not optional. It is the lift."
- Simen Christiansen

- The descent

03Sit between the hips, not down onto the knees

The most common cue in the gym - 'sit back' - is only half right. Sit back too much and you turn a squat into a good morning. Sit straight down and your knees track over your toes but you fold at the hips.

The correct feeling: sit BETWEEN your hips. Break at the hips and knees at the same time. Push the knees out over the pinky toes as you descend. Your torso will lean forward - that's fine and correct. Keep the bar directly over the midfoot the entire way down.

Depth - what actually counts

  • Powerlifting standard: hip crease breaks parallel to the top of the knee
  • Bodybuilding standard: as deep as your hips let you go without the pelvis tucking (butt wink)
  • If the pelvis tucks under - stop there, that is your true depth. Force depth beyond it and the lumbar spine takes load it shouldn't

- The drive

04Chest up, hips and shoulders rise together

Out of the hole, the mistake is letting the hips shoot up first. Your torso pitches forward, the squat becomes a good morning, and your lower back becomes the primary mover of a heavy weight. Fix it with a single cue: 'chest up as you drive'. The hips and shoulders should rise at exactly the same rate.

  • Drive the whole foot into the floor - never rock forward onto the toes
  • Push the knees out through the ascent too, not just the descent
  • Keep the bar over the midfoot the whole way up
  • Finish tall, glutes squeezed, brace still held - THEN exhale

- Common mistakes

05The four squat killers we see every week

  • Knees caving in (valgus) - fix with 'spread the floor' cue and glute med work
  • Heels lifting - ankle mobility issue, use lifting shoes or squat wedges until it improves
  • Butt wink at depth - stop at the depth your pelvis stays neutral, and mobilise the hips outside of training
  • Hips shoot up out of the hole - the weight is too heavy OR the brace collapsed. Both call for a lighter working weight and better bracing

- Programming

06How to squat for the next 10 years, not the next 10 weeks

  • Squat 2x per week for most lifters - one heavier day (3-5 reps @ RPE 7-8) and one lighter/volume day (5-8 reps for 3-4 sets)
  • Rotate a squat variation every 6-8 weeks - pause squats, front squats, tempo squats - to keep hips and knees healthy
  • Never redline squats for more than 3 weeks in a row without a deload
  • Pair every squat day with dedicated hip and ankle mobility - 10 minutes before, 5 minutes after
  • Warm-up sets: empty bar x 8, then 40% x 5, 60% x 3, 75% x 2, 85% x 1 before working sets

The Cheat Sheet

Key takeaways

  • 1Bar over midfoot from the walkout to the final rep - always
  • 2Brace 360° into the belly, hold through the rep, exhale at the top
  • 3Sit between the hips, knees push out, chest stays proud
  • 4Depth stops where the pelvis stops staying neutral
  • 5Squat twice a week, deload every fourth, rotate variations every 6-8 weeks
Simen Christiansen

Written by

Simen Christiansen

Onyx Head Coach · Onyx Elevate