Fixing Your Squat

What a Good Squat Looks Like

Before fixing problems, you need to know the target. A mechanically sound squat has a few non-negotiable elements — but also significant room for individual variation based on your anatomy. Dr. Aaron Horschig of Squat University has done extensive work documenting proper squat mechanics, and his framework is the basis for most of what follows.

Stance and foot position

Place your feet roughly shoulder-width apart. "Roughly" is the operative word — your ideal stance width depends on your hip socket anatomy (specifically, how your femur sits in the acetabulum). Some people squat best with a narrower stance; others need a wider one. Toes should point slightly outward, typically 15-30 degrees. The angle should feel natural and allow your knees to track over your toes without restriction.

Bar position

For a high bar squat, the bar sits on your upper traps, just below the C7 vertebra. For a low bar squat, the bar sits on the rear deltoids, roughly 2-3 inches lower. High bar tends to produce a more upright torso; low bar allows more forward lean and typically lets you move more weight. Neither is inherently better — choose based on your goals, mobility, and comfort.

Descent and depth

Initiate the descent by simultaneously breaking at the hips and knees. The movement should be controlled — not a free fall, but not artificially slow either. Aim for your hip crease to pass below the top of your kneecap at the bottom position. This is "below parallel" and represents full-depth for a standard back squat. Deeper is fine if your anatomy allows it without compensations (like excessive butt wink or rounding).

Spine and weight distribution

Your spine should stay in a neutral position throughout the entire lift — no excessive rounding (flexion) or arching (extension). Brace your core by taking a deep breath into your abdomen and tightening your trunk as if bracing for a punch. Weight should be evenly distributed across your whole foot — you should feel pressure on the heel, the ball of the foot near the big toe, and the ball near the little toe. If you're consistently shifting to your toes or heels, something is off.

Butt Wink

Butt wink is the colloquial term for posterior pelvic tilt at the bottom of the squat — your pelvis tucks under, causing your lower back to round. You can see it by watching from the side: the lumbar spine loses its neutral curve and flexes into a C-shape at the very bottom of the movement.

What actually causes it

The common explanation is "tight hamstrings." This is almost always wrong. Here's why: during a squat, your hamstrings cross both the hip and the knee. As the hip flexes (which would stretch the hamstrings), the knee also flexes (which slackens the hamstrings). These two actions roughly cancel each other out, so hamstring length is not the limiting factor for most people.

The real causes are:

• Hip anatomy:The depth and angle of your acetabulum (hip socket) determines how far your femur can flex before bone contacts bone. This is structural and cannot be changed with stretching. Some people physically cannot squat to full depth without butt wink due to their skeletal anatomy.
• Hip flexion ROM:Limited hip flexion range of motion from soft tissue restrictions (not bone-on-bone) can force the pelvis to tilt posteriorly to compensate. This is trainable.
• Motor control:Some lifters don't know how to maintain a braced, neutral pelvis under load at depth. They have the range of motion but lack the coordination to use it. This is also trainable.

How to fix it

• Box squats:Set a box at the depth just above where your butt wink starts. Squat to the box with control, pause, and stand. Over time, progressively lower the box as your control improves.
• Banded hip distractions:Loop a heavy resistance band around a squat rack post, step into it so the band wraps around your hip crease, step away to create tension, and sit into a deep squat hold. The band creates a distraction force that can improve hip capsule mobility. Hold for 30-60 seconds per side.
• Goblet squat holds:Hold a kettlebell or dumbbell at chest height and sink into the deepest squat you can maintain with a neutral spine. Hold for 30-60 seconds. The counterbalance of the weight in front makes it easier to maintain an upright torso and focus on pelvic control.

Knee Cave (Valgus)

Knee valgus is when your knees collapse inward during the squat, particularly during the ascent out of the hole. Watch from the front — if your knees drift toward each other as you stand up, that's knee cave. A small amount under maximal loads is common even in elite lifters, but it shouldn't be happening with moderate weights or on every rep.

Why it happens

• Weak hip abductors:The gluteus medius is the primary muscle that keeps your knee tracking outward. If it's weak relative to the load, the knee collapses inward. This is the most common cause.
• Poor motor patterning:Some lifters have strong enough hip abductors but don't activate them properly during the squat. The movement pattern defaults to valgus because the nervous system hasn't learned the correct recruitment sequence.
• Foot mechanics:Excessive pronation (flat feet collapsing inward) can contribute to knee cave by rotating the tibia internally. This is less common as a primary cause but can be a factor.

How to fix it

• Banded squats:Place a mini band just above your knees and squat. The band pulls your knees inward, forcing your hip abductors to work harder to keep the knees out. This is a proprioceptive cue — it teaches your body what "knees out" feels like. Use it during warm-up sets, not maximal lifts.
• Single-leg work:Bulgarian split squats and step-ups force each leg to stabilize independently, which exposes and corrects side-to-side imbalances. If your left knee caves and your right doesn't, single-leg work will address that directly.
• Hip abductor strengthening:Side-lying hip abductions, banded clamshells, and banded lateral walks directly target the gluteus medius. Do these 2-3 times per week as part of your warm-up or accessory work.

Excessive Forward Lean

If your chest drops forward during the squat — turning it into something that looks more like a good morning than a squat — you have an excessive forward lean. Some forward lean is normal (especially with low bar squats), but if your torso angle is approaching 45 degrees or more, or if you consistently feel the load shifting into your lower back, it needs to be addressed.

Why it happens

• Weak quads:Your body is efficient at finding the path of least resistance. If your quadriceps are weak relative to your posterior chain, your body will shift the load backward — leaning forward moves the demand from the quads to the glutes and spinal erectors. This is the most common cause in lifters who have been deadlifting more than squatting.
• Poor ankle mobility:Limited ankle dorsiflexion restricts how far your knees can travel forward. To compensate, the torso leans forward to keep the center of gravity over the mid-foot. You can test this with the wall ankle stretch described in the mobility section below.
• Bar position mismatch:A high bar position with long femurs and a short torso will produce significant forward lean. In this case, switching to low bar (which accommodates more forward lean by design) or adjusting stance width may be the fix, not a mobility drill.

How to fix it

• Front squats:The front-loaded bar position makes it physically impossible to lean forward excessively — if you do, you drop the bar. Front squats force an upright torso and build quad strength simultaneously. Add them as your primary squat variation for 4-6 weeks if forward lean is your main issue.
• Heel-elevated squats:Place small weight plates (5-10 lb) or squat wedges under your heels. This artificially increases ankle dorsiflexion, allowing the knees to travel further forward and the torso to stay more upright. Use this as a temporary tool while you work on actual ankle mobility — it's a band-aid, not a cure.
• Ankle mobility work:See the mobility drills section below. If your ankle dorsiflexion is limited, no amount of quad strengthening will fully fix the forward lean.
• Quad-focused assistance work:Leg press, leg extensions, and close-stance squats directly strengthen the quads. If weakness is the cause, building quad strength will naturally reduce the forward lean over time.

Mobility Drills

Spend 5-10 minutes on these drills before squatting. Prioritize the areas where you have the most restriction. You don't need to do all of them every session — pick 2-3 that target your specific limitations. Dr. Aaron Horschig (Squat University) and Jeff Cavaliere (Athlean-X) both have video demonstrations of these drills on their respective platforms.

For a complete daily mobility routine that covers your whole body — not just squat-specific drills — see the injury prevention & mobility guide.

Ankle dorsiflexion

Wall ankle stretch (knee-to-wall test): Face a wall, place one foot about 4 inches from the wall, and drive your knee forward over your toes to touch the wall. Keep your heel flat on the ground. If you can't touch the wall at 4 inches, your ankle dorsiflexion is limited. Work at the maximum distance where you can touch with your heel down. Aim for 4-5 inches as your target. Do 2-3 sets of 10-15 reps per ankle, holding the end position for 2-3 seconds each rep.

Banded ankle mobilization: Wrap a resistance band around your ankle at the joint line (where the foot meets the leg), anchor the band behind you so it pulls backward, and perform the knee-to-wall stretch. The band helps create posterior glide of the talus bone, which is often the actual restriction in ankle dorsiflexion.

Hip mobility

90/90 stretch: Sit on the floor with your front leg bent 90 degrees in front of you and your back leg bent 90 degrees behind you (both shins roughly perpendicular to your body). Sit tall, then lean forward over the front shin. Hold for 30-60 seconds per side. This simultaneously works hip external rotation (front leg) and hip internal rotation (back leg).

Pigeon stretch: From a push-up position, bring one knee forward toward the same-side wrist, lay the shin across your body at an angle, and lower your hips toward the floor. Hold for 30-60 seconds per side. Targets the hip external rotators and deep hip flexors.

Deep goblet squat hold: Hold a kettlebell at chest height and sink into the deepest squat you can with a neutral spine. Use your elbows to gently push your knees outward. Hold for 30-60 seconds. This is both a mobility drill and a motor control exercise — it teaches your body what a good bottom position feels like under light load.

Thoracic spine

Foam roller extensions: Lie on a foam roller positioned across your upper back (thoracic spine, not lower back). Support your head with your hands, and gently extend backward over the roller. Move the roller up or down a segment and repeat. Do 5-10 extensions at each segment. This improves thoracic extension, which helps you maintain an upright torso under the bar.

Cat-cow: On your hands and knees, alternate between arching your back (cow) and rounding your back (cat). Move slowly and focus on the thoracic spine — most people default to moving their lumbar spine because it's more mobile. Deliberately keep your lower back still and drive the movement from between your shoulder blades. Do 10-15 reps.

Squat Variations & When to Use Them

There is no single "best" squat. Different variations emphasize different muscles, accommodate different anatomies, and serve different training goals. Here's when to use each one.

Back squat (high bar or low bar)

The default squat for building overall lower body strength and muscle mass. High bar emphasizes quads slightly more; low bar allows more weight and shifts emphasis slightly toward the posterior chain. If you're a general strength trainee or bodybuilder, this is your primary squat. If you're a powerlifter, you'll compete with whichever bar position lets you move the most weight.

Front squat

The bar sits on the front delts in a clean grip or cross-arm position. Forces a very upright torso, making it excellent for people who struggle with forward lean. Strong quad emphasis. Also the receiving position for the clean in Olympic weightlifting. Downside: most people can front squat about 70-85% of their back squat, so the absolute loading is lower. Wrist and upper back mobility can also be limiting factors.

Goblet squat

Hold a kettlebell or dumbbell at chest height and squat. This is the best squat for beginners learning the movement — the front-loaded weight naturally teaches an upright torso, and the load is limited by what you can hold, which prevents you from going too heavy too soon. Also works well as a warm-up for more advanced lifters. Once you can comfortably goblet squat a heavy dumbbell for sets of 10, you're ready for a barbell.

Safety bar squat

A specialty bar with handles in front and padding that sits on your traps. The cambered design shifts the center of gravity forward (similar to a front squat) while still loading the bar from behind. Excellent for lifters with shoulder mobility issues who can't comfortably hold a straight bar on their back. Also useful as a variation to reduce monotony. The handles make it easier to maintain an upright torso without the wrist demands of a front squat.

Box squat

Squat to a box or bench set at a specific height. You sit down (briefly — not resting), pause, and stand back up. The primary benefit is teaching depth control: you always hit the exact same depth. Useful for people working on butt wink (set the box just above where the wink starts) or for lifters who need to learn to sit back into the squat rather than dive-bombing. Also reduces the stretch reflex at the bottom, which builds raw concentric strength.

Belt squat

The load hangs from a belt around your hips rather than sitting on your spine. This removes spinal compression entirely, making it ideal for lifters with back issues, those recovering from injury, or as additional squat volume without taxing the lower back. Requires a belt squat machine or a landmine/lever arm setup. The movement pattern is similar to a back squat, but the lack of axial loading means you can often handle more volume without systemic fatigue.