7 Squat Form Mistakes Belltown Coaches See Every Week

Most squat plateaus are not strength plateaus

About 80 percent of the squat issues I diagnose at Persistence Athletics in Belltown are form mistakes, not strength deficits. The bar will not move because the position cannot handle the load.

I'm Ravi Dewangan, CFL3, MS in Strength and Conditioning, and CrossFit Seminar Staff. I have coached the squat thousands of times. The same seven mistakes show up over and over in the gym, and once you can spot them on video, you can fix most of them in 4 to 8 weeks of focused work. Updated April 2026.

This post walks through the seven I see every week, in order of frequency. For each: what it looks like, why it happens, the cue I use, and the drill that fixes it.

Table of Contents

• Mistakes 1 to 4: the most common patterns
• Mistakes 5 to 7: the more subtle ones
• How to film and self-diagnose
• How we coach the squat at Persistence Athletics
• A 4-week squat reset template
• Frequently Asked Questions

Mistakes 1 to 4: the most common patterns

Mistake 1: Heels lifting off the floor

What it looks like: At the bottom of the squat, the heels come off the floor and the lifter shifts forward onto the balls of the feet. The bar drifts forward over the toes.

Why it happens: Ankle dorsiflexion limitation, almost always. The ankle cannot bend forward enough to keep the shin angled while the hip drops. Stiff calves and limited Achilles range are the usual culprits.

The cue: "Drive your heels through the floor."

The drill that fixes it: Daily ankle mobility for 4 to 6 weeks. Knee-to-wall test, weighted dorsiflexion stretch, calf foam roll. In the meantime, elevate the heels with lifting shoes or a small plate under each foot. The elevation buys you working room while you fix the underlying mobility.

Mistake 2: Chest collapsing forward

What it looks like: The bar starts vertical, but as the lifter descends, the torso pitches forward and the chest folds toward the floor. At depth, the bar is well in front of the midfoot.

Why it happens: Two causes, usually combined. First, weak upper back, especially the rhomboids and mid-traps that hold the bar tight to the back. Second, ankle mobility limitation forcing the hips back and chest down to maintain balance.

The cue: "Chest up, elbows down, bar tight to your back."

The drill that fixes it: Goblet squats with a moderate dumbbell for 4 weeks, then front squats for another 4 weeks before returning to back squat. Both forces an upright torso. Pair with row work (bent-over rows, chest-supported rows) to build the upper back strength that holds the bar in position.

Mistake 3: Knees caving inward (valgus collapse)

What it looks like: As the lifter drives out of the bottom, the knees collapse toward each other, sometimes touching. The pattern usually appears under load (above 70 percent) and disappears at lighter weight.

Why it happens: Weak glute medius (the side glute that abducts and externally rotates the hip), combined with a missing "spread the floor" intent. The lifter is pushing straight up instead of pushing the floor outward.

The cue: "Spread the floor with your feet" or "knees out over the toes."

The drill that fixes it: Banded squats with a mini-band around the knees. The band provides feedback. The lifter resists the band by pushing the knees out throughout the lift. Pair with lateral band walks and single-leg glute bridges to build the glute medius. 3 to 4 weeks of consistent banded work usually erases this entirely.

Mistake 4: Butt wink (posterior pelvic tilt at depth)

What it looks like: At the bottom of the squat, the pelvis tucks under and the lower back rounds slightly. Often mistaken for back rounding, but the cause is different.

Why it happens: The lifter is squatting deeper than their hip mobility allows. When the femur runs out of room in the hip socket, the pelvis tilts to create more space, which rounds the lumbar spine.

The cue: "Squat to the depth where you can keep your pelvis neutral, no deeper."

The drill that fixes it: Reduce depth to the point where the pelvis stays neutral. Most lifters with butt wink are forcing 1 to 2 inches of depth their hips cannot give them. In parallel, work hip mobility (90/90 stretch, deep squat hold, frog stretch). Over 6 to 12 weeks, usable depth extends.

Heavy squats with significant butt wink are a low-reward, high-risk pattern. Cap depth at neutral pelvis until mobility catches up.

Mistakes 5 to 7: the more subtle ones

Mistake 5: Bar drifting forward during the lift

What it looks like: The bar starts directly above midfoot, but during the descent or ascent, it travels forward and ends up over the toes. The lifter often has to muscle the bar back over center to lock out.

Why it happens: Weak bracing or limited lat tightness. The bar drifts when the upper back is not actively pulling it back into position. Lats that are not engaged let the bar move.

The cue: "Bar straight up, midfoot pressure, lats tight."

The drill that fixes it: Pause squats. 2-second pause at the bottom of every rep. The pause forces the lifter to feel where the bar actually is and adjust mid-rep. After 4 weeks of pause squats at 70 percent, bar path usually cleans up. Pair with bar-bent-over rows to build active lat engagement.

Mistake 6: Shallow rep depth

What it looks like: Hip crease never drops below the top of the kneecap. The lifter calls it a squat, but it is functionally a quarter squat or half squat.

Why it happens: Either mobility limitations (ankle, hip, or both) or learned avoidance because depth feels uncomfortable. Some lifters discover they can move bigger weight at half depth and stop going lower because the numbers look impressive.

The cue: "Hip crease below the top of the knee. If you cannot, lighten the weight."

The drill that fixes it: Honest goblet squats to full depth for 4 weeks at light weight. Box squats to a target box set at parallel. Front squats, which mechanically force depth. The truth is uncomfortable: shallow squats build shallow strength. The fix is reducing the bar weight and rebuilding the pattern at full depth.

Mistake 7: Unilateral shift (asymmetry)

What it looks like: As the lifter drives out of the bottom, the hips shift to one side or the bar tilts. One side of the body is taking more of the load than the other.

Why it happens: Strength asymmetry, mobility asymmetry, or a previous injury that the lifter is unconsciously protecting. Common in lifters returning from a single-side injury (hip, knee, ankle, or shoulder).

The cue: "Even pressure on both feet, hips square."

The drill that fixes it: Single-leg work to identify and address the weaker side. Bulgarian split squats, single-leg RDLs, step-ups. Work the weaker side until it can match the stronger side, then reintroduce the bilateral squat. This usually takes 6 to 12 weeks if the asymmetry is significant.

If the shift is recent and tied to a clear injury, see a physical therapist before you keep squatting heavy. Some asymmetries are physical pattern, some are protection, and only a clinician can tell you which.

How to film and self-diagnose

The fastest way to spot any of these in your own squat is to film a working set from two angles.

Angle 1: Side view. Camera at the level of your hips, 6 to 8 feet to the side. Captures bar path, depth, knee position, torso angle.

Angle 2: Front view. Camera 8 to 10 feet directly in front. Captures knee caving, hip shift, bar tilt.

Film at 80 percent or higher. Watch in slow motion. Compare to good technique reference video. The mistake will usually be visible by the third rep.

If you cannot identify the issue from your own video, that is when a coach earns their fee. A trained eye sees the breakdown frame in seconds.

How we coach the squat at Persistence Athletics

The squat is in our group classes at least once a week, often twice. Every member films at least once a quarter, and our coaches review form on a rolling basis. The seven mistakes above are the ones we are looking for.

In our strength training program in Seattle, we run formal block periodization on the squat. Members start each block at 70 to 75 percent of their training max, work up over 6 weeks, deload, and re-test. The structure naturally exposes form breakdowns at the upper percentages, which is when most of the seven mistakes appear.

For members who have plateaued and can identify a specific form issue, 4 to 8 sessions of personal training with one of our coaches is usually enough to rebuild the pattern. Coach Jacque Dewangan (CFL3, PNL2) and I run the squat-focused PT blocks. The fix is usually visible in the first session, but the rebuild takes the full block.

A 4-week squat reset template

If you have identified one of the seven mistakes in your own squat, here is the structure I would run.

Weeks 1 to 2: Reset at reduced load

• 3 sets x 5 reps at 60 to 65 percent of your training max
• Pause squats with 2-second pause at the bottom
• Daily mobility work targeted at the specific limitation (ankle, hip, t-spine)
• Goal: rebuild the pattern at a load where form holds

Weeks 3 to 4: Reintroduce loading

• 4 sets x 5 reps at 70 to 75 percent
• Drop the pause, keep the focused intent (cue the fix on every rep)
• Continue mobility work
• Goal: prove the pattern holds under moderate load

Re-test in week 5

• Work up to a heavy 3 at 85 to 90 percent of previous max
• If form holds, continue normal programming
• If form breaks down, repeat the 4-week reset with adjusted focus

The reset is not glamorous. It is also where the gains come from. Lifters who skip the reset and try to grind through a broken pattern stall for months.

Frequently Asked Questions

What is the most common squat form mistake?

Knees caving inward (valgus collapse) under load. About one in three lifters at moderate working weight does this without noticing. The cause is almost always weak glute medius or insufficient external rotation cueing. Fix with band-assisted squats with a band around the knees and a deliberate 'spread the floor' cue.

How do I know if my squat depth is good enough?

The hip crease must drop below the top of the kneecap at the bottom of the rep. That is parallel. For most lifters, that is also the point at which mobility is taxed. If your knees collapse inward or your back rounds at depth, you are at the limit of your usable depth and should work mobility before forcing depth with weight.

Why do my heels come off the floor when I squat?

Almost always ankle dorsiflexion limitation, occasionally combined with overly stiff calves. Fix with daily ankle mobility work (couch stretch, weighted ankle dorsiflexion, calf foam rolling) and elevate your heels in the meantime. Lifting shoes with a 0.5 to 0.75 inch heel buy you working room while you fix the mobility.

What is butt wink and is it dangerous?

Butt wink is the posterior tilt of the pelvis at the bottom of a deep squat, often mistaken for back rounding. It is not inherently dangerous at light loads, but under heavy load, it places the lumbar spine in a less-supported position. Fix it by squatting only to the depth where the pelvis stays neutral, then improve hip mobility and core bracing to extend usable depth over time.

Can a coach really fix my squat in one session?

Usually no. A coach can identify the issue in one session and give you the cue and the drill. Actually fixing the pattern takes 4 to 8 weeks of repetition under reduced load. The coaching is the leverage point. The reps are what make it stick.

Should I keep squatting heavy if my form is breaking down?

No. If your form breaks down at 85 percent and above, the bar will not move heavier than your worst position can handle. Reduce load to where form holds (usually 70 to 80 percent), spend 4 to 6 weeks rebuilding the position, then re-test. Adding weight on top of broken form is how lifters injure themselves and stall for years.

Try a free first class at Persistence Athletics

If you want a coach to film your squat and call out the breakdown, that is what we do. Your first class at Persistence Athletics in Belltown is free, and includes a coached squat session. Book your free class. Persistence Athletics, 3025 1st Ave, Belltown, Seattle. 8 minutes from Amazon, walkable from anywhere in downtown.