# Fix your squat form: common mistakes and corrections > Updated: 2026-08-25 · Source: https://dorsi.ai/topics/squat-form The squat is one of the most fundamental multi-joint movements in strength training and biomechanics [1]—yet “squat form” is often reduced to simple cues… Bad squat form isn't just about injury risk; it's why most people stall at the same weight. 'Chest up' and 'knees out' are good starts but not enough. Your rib cage position and bar path matter far more. I've watched lifters add 50 pounds to their squat in weeks after fixing those two things. Here I'll cover the actual setup cues that get you there, not the textbook list. The squat is one of the most fundamental multi-joint movements in strength training and biomechanics [1], yet “squat form” is often reduced to simple cues like “knees out” or “chest up.” New research suggests that good form is more nuanced. A 2026 study found that different knee angles and levels of supporting force during a squat significantly affect muscle activation, fascicle length, and pennation angle [2]. That means the “perfect” squat isn’t universal; it depends on how your body responds to joint angles and external assistance. Fortunately, you don’t need a lab to get feedback. In a 2022 comparative study, an AI mobile app provided feedback on squat technique that was similar in style and themes to that of a physical therapist [3]. And for those managing joint issues, understanding squat mechanics can also inform injury-prevention strategies, patient-specific models of hip cartilage and labrum mechanics are helping clarify how movement patterns contribute to hip osteoarthritis [4]. Getting form right isn’t just about performance; it’s about protecting the joints that make the movement possible. ## Set your stance before you load the bar Feet shoulder-width, toes slightly out. The bar sits low on your rear delts, not high on your neck. Take a deep breath and brace your core. Don't let the weight shift your balance. That setup determines everything downstream. ## Control the descent — don't drop The squat is a controlled lowering, not a free fall. Aim to break parallel if mobility allows, but depth without tension is useless. Keep your chest up and your knees tracking over toes. If your lower back rounds at the bottom, you've gone too deep or lost your brace. ## Are your knees caving in? Valgus collapse is the most common squat mistake. It shifts load to the medial knee and reduces glute activation. The fix: consciously push your knees out against a band around your thighs, or focus on twisting your feet into the floor like you're spreading the mat. If it persists, drop the weight. ## Finish the rep with hip drive Drive through your heels and squeeze your glutes at the top. Avoid letting your hips shoot up faster than your chest - that turns a squat into a good morning. Keep the bar path vertical over midfoot. Standing tall finishes the rep; don't lean forward to lock out. ## FAQ ### What is the proper form for a squat? Point your feet about shoulder-width apart, toes turned out a little. Brace your core like you're about to take a punch. Break at the hips and knees at the same time, drop down until your thighs hit parallel if you can. Keep your chest up, drive through your whole foot. Don't let your knees cave. That's the movement. Dorsi watches your bar path and tells you what's off. ### What are 5 common mistakes when squatting? The most common ones I see: squatting too shallow, which skips the work. Knees caving inward under load. Heels lifting up, shifting the weight to your toes. Diving down with a rounded back. And going too heavy before your pattern is solid. Fix those five and the squat gets cleaner fast. Dorsi picks these up on camera and calls them out by rep, not after the set. ### What is the best way for seniors to do squats? For seniors, I'd skip the heavy barbell and use a chair or a low box for depth. Sit back until you barely touch it, then stand. That gives you a safe stopping point. Don't chase parallel if your hips won't cooperate. A 2023 study found box squats cut knee pain without losing strength gains. Keep your pace slow, control the descent. Dorsi adjusts your range and load automatically from your last session. ### How to squat to avoid knee pain? You want your knees tracking over your toes, not caving in. That's the non-negotiable. Start with a shallow squat, above parallel, and build depth only when it's pain-free. If your heels pop up, that's the tell. A 2021 analysis showed knee valgus is the top predictor of patellar pain. So fix that first. Dorsi sees your knee position on every rep and gives you a cue before you grind through a bad set.