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Pistol Squat: How to Do It, Progressions and Muscles Worked

Nadia Popescu

By Nadia Popescu, Strength & Conditioning Writer · Updated 13 July 2026

The pistol squat is a full-depth squat performed on one leg, with the other leg held straight out in front of you. It is one of the most impressive and honest tests of lower-body strength, balance and mobility there is, because there is nowhere to hide: one leg does all the work of lowering and lifting your entire bodyweight. Training each leg on its own is also a proven way to find and fix the left-to-right strength differences that a normal squat can mask (research on unilateral squat strength and balance). Here is how to build up to a pistol squat safely, the muscles it works, and the mistakes that keep people stuck.

How to do a pistol squat

Before you try a full one, know what you are aiming for. This is the finished movement.

  1. Set your stance. Stand on one leg with the other leg held out straight in front of you, just off the floor. Hold your arms out in front for balance.
  2. Brace and sit back. Take a breath, tighten your core, and push your hips back as you bend the standing knee. Keep your chest up and your extended leg reaching forward.
  3. Lower under control. Descend slowly, keeping your standing heel flat on the floor and your knee tracking over your foot. Your raised leg stays straight and lifts higher as you sink.
  4. Hit the bottom. Lower until the back of your standing thigh is close to your calf, a full deep squat, without letting your lower back round hard or your heel pop up.
  5. Drive up. Push through your whole foot, especially the heel, and stand back up in one controlled motion without wobbling or bouncing. That is one rep. Complete your reps, then swap legs.

The two things that make or break a pistol

Ankle mobility and a flat heel. If your heel lifts as you descend, you tip backwards and the rep collapses. Keep your standing heel glued to the floor. If you genuinely cannot, elevate your heel slightly on a small plate or wedge while you build ankle mobility, and work on it separately.

Muscles worked

A pistol squat is a leg exercise with a huge balance and control demand layered on top.

  • Quadriceps. The muscles on the front of your standing thigh are the main movers, controlling the descent and straightening the knee to stand. Because one leg does everything, they work far harder than in a two-legged squat.
  • Glutes. Your glute max drives your hip from the deep bottom position back up to standing and helps keep your pelvis level so you do not collapse to one side.
  • Hamstrings and adductors. Your hamstrings assist hip extension, and your adductors (inner thigh) work overtime to stabilise the standing leg and stop your knee caving in.
  • Core. Your abs, obliques and lower back brace hard to keep your torso upright and controlled while you balance on one foot.
  • Calves, ankle and hip stabilisers. Small muscles around your ankle and hip fire constantly to keep you balanced, which is why pistols improve balance so noticeably over time.

To load these muscles once bodyweight pistols become easy, or to train the same single-leg pattern with more weight, a pair of adjustable dumbbells or a set of kettlebells is ideal.

Benefits

  • It exposes and fixes imbalances. Training one leg at a time reveals whether your left and right sides are truly equal, then evens them out, which carries over to your two-legged lifts and to sport.
  • It builds serious single-leg strength. Handling your full bodyweight on one leg through a deep range builds strength that a machine or a light two-legged squat simply cannot.
  • It develops balance and control. The constant stabilising work sharpens your balance and body awareness, useful for running, sport and everyday movement.
  • It needs almost no kit. A bit of floor space and, at most, something to hold for balance is enough, making it perfect for home training.
  • It supports the strength work you should already be doing. Single-leg strength counts towards the muscle-strengthening activity recommended on at least two days a week.

Progressions: how to build up to a pistol squat

Almost nobody drops straight into a full pistol. Work through these stages, moving on only when the current one feels strong and controlled for 3 sets of 5 or more reps per leg.

  • Box squat to a high surface. Sit back onto a tall weight bench or box on one leg, then stand. Start high, where it is easy, and lower the surface over the weeks to increase depth.
  • Assisted pistol squat. Hold a doorframe, a squat rack upright or a resistance band or strap anchored in front of you, and use your arms just enough to help you balance and out of the bottom. Gradually take less help.
  • Counterbalanced pistol. Hold a light dumbbell or plate out in front of you with both hands. The weight acts as a counterbalance and, surprisingly, makes the full range easier to control than bodyweight alone.
  • Negative pistols. Lower as slowly as you can on one leg (aim for 3 to 5 seconds), then stand up with both legs or a push off your hands. Building strength in the lowering phase teaches the pattern fast.
  • Full pistol squat. Put the pieces together: one leg, no assistance, full depth, controlled up and down.

Common mistakes

Heel lifting off the floor. Usually an ankle mobility issue. It sends you tipping backwards. Keep the heel down, and if you cannot, elevate it slightly while you train ankle mobility separately.

Knee caving inward. Letting the standing knee collapse towards the midline is weak and stresses the joint. Actively push the knee out so it tracks over your foot, and strengthen your glutes to hold it there.

Collapsing into the bottom. Dropping fast and bouncing out of the hole is how people tweak a knee. Lower under control the whole way and own the bottom position before you stand.

Rounding the lower back. A little forward lean is normal, but a hard rounding of the spine at the bottom means you are chasing depth you do not yet own. Build the range with box squats first.

Skipping the progressions. Grinding at full pistols before you are ready just reinforces poor patterns and invites injury. Earn each stage, then move on.

Reps and sets

Because pistols are demanding and skill-heavy, quality beats quantity:

  • Building the skill and strength: 3 to 4 sets of 3 to 6 reps per leg at whatever progression challenges you, 2 to 3 times a week. Rest 60 to 90 seconds.
  • Once you own the full move: 3 to 4 sets of 5 to 8 reps per leg, adding a held dumbbell to keep progressing.
  • Always train your weaker leg first and match the reps on your stronger side to it, so you close the gap rather than widen it.

Pair pistol squats with a hip-dominant move like the Romanian deadlift or hip thrust, and you have a complete, balanced lower-body session that needs barely any equipment.

Recommended reads

  1. Goblet squat: how to do it and muscles worked
  2. Bulgarian split squat guide
  3. The best kettlebells in the UK
  4. The best resistance bands in the UK
  5. The best adjustable dumbbells in the UK

Frequently asked questions

What muscles does the pistol squat work?

The pistol squat mainly works the quads and glutes of the working leg, with strong support from the hamstrings, adductors and calves. Because you balance on one foot, your core and the small stabilising muscles around your hip and ankle work hard too, and the extended leg demands hip flexor and quad strength to hold it up. It is a full lower-body and balance exercise in one.

Why is the pistol squat so hard?

A pistol squat asks one leg to lower and lift your entire bodyweight through a full range of motion, so it needs a lot of single-leg strength. On top of that it demands ankle and hip mobility to keep your heel down and stay balanced, plus the coordination to hold your other leg out straight. Most people lack one or more of those, which is why progressions matter.

How do I train for a pistol squat?

Work through progressions rather than forcing the full move. Start with box squats to a high surface, then lower the surface over time, use assisted pistols holding a doorframe or TRX strap, and practise slow negatives on one leg. Build ankle mobility and single-leg strength alongside, and most people reach a full pistol squat in a few weeks to a few months.

Are pistol squats bad for your knees?

For healthy knees, a controlled pistol squat is not inherently bad and can build strong, resilient legs. The load is your bodyweight, not a heavy bar, and moving through a full range under control is generally well tolerated. If you have existing knee pain or injury, build up slowly with partial ranges and see a physiotherapist before loading the joint fully.

Are pistol squats worth doing?

Yes, if you enjoy bodyweight training or want to fix left-to-right strength differences. Training each leg on its own exposes and corrects imbalances that a normal two-legged squat can hide, and it builds excellent balance and control. If your only goal is raw leg size, loaded barbell or dumbbell squats are more efficient, but pistols are a superb skill and strength builder.

Do pistol squats build muscle?

They build muscle in the quads, glutes and hamstrings, particularly for beginners and intermediate trainees, because one leg handles your full bodyweight. As you get stronger, bodyweight eventually becomes too light to keep growing, at which point you can hold a dumbbell or add reps and tempo to keep the stimulus high.

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