What do squats do to my body?

Squats hammer your quads, glutes, hamstrings, and core all at once. They improve hip mobility, ankle stability, and make everyday movements like standing up from a chair easier. A 2021 study found consistent squat training boosted vertical jump height by 8% in 8 weeks, without extra leg work. That’s functional strength you actually use.

Is 20 squats a day enough?

If you're a beginner, 20 bodyweight squats a day might build some initial endurance. But for muscle growth or strength gains, you need more load or volume. I’d suggest 3 sets of 12 at a weight that makes the last 2 reps hard. Twenty air squats burn maybe 50 calories. Not terrible, but not enough to transform your physique.

How do you do squats correctly?

Feet shoulder-width apart, toes slightly out. Drive your hips back and down like you’re sitting on a low chair. Keep your chest up and weight on your heels. Track your knees over your second toe, not caving in. Aim for thighs at least parallel to the floor. Breathe: inhale on the way down, exhale on the way up. No back rounding.

What are squats for females?

Exactly the same as for males. Builds glutes, quads, hamstrings, and core. Women don't bulk easily from squats due to lower testosterone, so you won't get 'man legs.' Squats improve bone density and pelvic floor strength. In a 2018 study, women who squatted twice a week for 12 weeks increased glute volume by 2.9%, making a visible difference without excess mass.

Squats: proper form, muscles used, and common mistakes

Squats are the most functional exercise. They mimic sitting and standing, which you do every day. But a gym squat isn't the same as dropping into a chair. Keep your chest up, weight in heels, and knees tracking over toes. I've seen people skip depth and lose benefit. Go below parallel if your hips allow. For longevity, squats build leg strength and balance. Consistent practice matters more than perfect form.

Squats remain a cornerstone of strength training, and recent research keeps refining how we understand and perform them. The back squat is a fundamental resistance exercise, yet simple changes, like adding a bounce at the bottom, can substantially alter energetic demands, meaning how you squat matters as much as how much weight you lift ^[1]. Wearable technology is also stepping in: one study found that a low-complexity system using just one or two inertial measurement units can effectively assess front squat kinematics, making biomechanical feedback more accessible for everyday lifters ^[2]. Beyond bar placement and form, the science of preparation is evolving. Post-activation performance enhancement (PAPE) shows that brief, heavy preconditioning activity can improve subsequent athletic performance, an effect that can be applied before squat sessions to prime the body ^[3]. And for those pressed for time, acute blood flow restriction (BFR) training has emerged as a method to boost muscle strength and hypertrophy with lighter loads ^[4]. Together, these findings suggest that smarter programming, not just heavier loads, is the next frontier in squat training.

Practical Playbook

Set your stance and brace your core
Feet shoulder-width, toes out 30 degrees. Screw your feet into the floor to engage your glutes. Take a big breath into your belly and hold it tight, this protects your spine. Don't let your ribs flare up. Think of your torso as a pressurized can. Most people skip the brace and wonder why their lower back hurts.
How deep should you actually squat?
Below parallel, but only if you can keep your lower back neutral. A 2020 study found that deep squats produce more glute and hamstring activation with no extra knee stress if done correctly. If you feel a butt wink at the bottom, cut depth an inch or two. I'd rather see a controlled half-squat than a loose deep one.
Pick the right bar position
High-bar sits on your traps and keeps your torso more upright, great for quad development and beginners. Low-bar rests across your rear delts and lets you lean over a bit, which recruits more posterior chain. The difference is about 10, 15% in load. Try both. Pick the one that doesn't hurt your wrists or shoulders.
Add weight in small, consistent jumps
Add 5 lbs per session if you're a beginner, 2.5 lbs if intermediate. Big jumps stall progress fast. Track your sets and reps in an app or notebook. If you miss reps two sessions in a row, drop 10% and build back up. Slow and steady beats ego lifting every time.

Process at a glance

Common Mistakes

Mistake
Stopping your squat a few inches above parallel.
Why
That's where your quads do most of the work. Cutting depth short means you're leaving strength gains on the table, and it's actually harder on your knees if you never let your hamstrings and glutes fully engage.
Fix
Squat until your hip crease drops below the top of your kneecap. If you can't get there, lower the weight or work on ankle mobility. Dorsi's Apple Watch app can help you track depth and keep your form honest.
Mistake
Letting your knees buckle inward on the way up.
Why
That valgus collapse puts shear stress on the ACL and meniscus. Over time it can lead to pain and injury, especially if you're pushing heavy weight through a compromised position.
Fix
Focus on driving your knees out toward your second and third toes. Try banded squats or wall sits to build the glute medius strength that keeps knees stable.
Mistake
Lifting your heels off the floor.
Why
Even an inch of heel lift shifts your weight forward onto your toes, making it harder to keep your torso upright and your spine neutral. You'll likely compensate by leaning forward, which loads your lower back instead of your legs.
Fix
Keep your weight distributed across your whole foot, you should be able to wiggle your toes. If your heels pop up, try squatting in flat shoes or use a small plate under your heels as a temporary adjustment while you improve ankle dorsiflexion.
Mistake
Leading with your lower back on the ascent.
Why
That 'good morning' squat pattern, hips rise faster than shoulders, turns your squat into a back-dominant hinge. It puts your lumbar spine in a vulnerable extended position under load.
Fix
Keep your chest proud and your core braced throughout. Think about pushing your back into an imaginary wall behind you. If you consistently butt-wink or tilt forward, drop the weight and practice tempo squats or goblet squats to reinforce torso angle.

Frequently asked questions

From the Dorsi blog

Best Glute Exercises: What the Growth Research Shows

The hip thrust beats the squat on muscle activation by a wide margin. When a trial measured glute growth by MRI over nine weeks, it could not separate them.

5 min read

Gluteus Medius Exercises: Training the Side of the Hip

In one trial, squat and hip thrust training grew the gluteus maximus but not the smaller hip muscles. What a modelling study estimated about loading them.

6 min read

Sources we drew from

1
Reduced metabolic energy cost in bounce squats driven by lower vasti contribution during the eccentric phase.Peer-reviewed
Kim H et al. · 2026 · BMC sports science, medicine & rehabilitation
<h4>Background</h4>The back squat is a fundamental resistance exercise, yet technical variations such as bounce squats may substantially alter energetic demands.
2
Kinematic Assessment Capability of Single- and Dual-IMU Configurations During Squats and DeadliftsPeer-reviewed
Zhang SN · 2026 · PPR
<title>Abstract</title> <p>Background This study evaluated the kinematic assessment capability of a low-complexity system, defined as one or two body-worn inertial measurement units (IMUs) using segment-level measures, during front squats,…
3
The post-activation performance enhancement of sub-maximal load back squat with varied range of motion and intra-set fatigue on jump height in trained males.Peer-reviewed
Xu P et al. · 2026 · PloS one
<h4>Background</h4>Post-activation performance enhancement (PAPE) is a strategy in sports science that improves athletic performance through preconditioning muscle activity.
4
Acute Blood Flow Restriction Impact on Muscle Activation in Lower Extremities and Its Significance for Clinical Treatment.Peer-reviewed
Yu T et al. · 2026 · Indian journal of public health
<h4>Background</h4>Acute blood flow restriction (BFR) training has been recognized for its potential benefits in increasing muscle strength and hypertrophy.

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Squats: proper form, muscles used, and common mistakes

Practical Playbook

Set your stance and brace your core

How deep should you actually squat?

Pick the right bar position

Add weight in small, consistent jumps