Box squat: how to set the box, touch or sit, and what it changes

A box squat is a squat to a box, a bench or another stable seat set behind you. It comes in two forms. Touch the box lightly and stand straight back up, and it's a depth marker: every rep reaches the same place. Sit on it, pause, and stand from a dead stop, and it's the powerlifting box squat, usually done with a barbell and a wide stance. The goblet and bodyweight versions to a bench are on the goblet squat and the bodyweight squat; this page is the barbell box squat and what changes when you sit.

It covers the setup, the box height, what the studies found the box changes, touching or sitting, the faults, and the sets. The standard squat and its checkpoints are on squat form.

How to do a box squat

1. Set the box in the rack area at the height that puts your thighs about parallel to the floor when you sit on it (the next section has the details).
2. Unrack the bar onto your upper back and walk out until the box is about a foot's length behind your heels.
3. Take your stance, feet about shoulder width or a little wider, toes turned out a little.
4. Brace and sit back and down, pushing your hips back and your knees out over your toes, until your hips reach the box.
5. Sit without collapsing. Keep your brace and your back position, and let the box take some of your weight for a moment, not all of it. Don't rock back.
6. Stand up by driving your feet into the floor, your chest and hips rising together.

For the touch-and-go version, skip the sit: touch the box and come straight back up. Dumbbells or a kettlebell at your chest work the same way when there's no barbell.

How high to set the box

The box sets your depth, so its height is the most important choice you make. Lower is a deeper squat, and the depth studies favour deeper. In 17 men over ten weeks, full squats grew the glutes and the inner thighs more than half squats did, 6.7% against 2.2% and 6.2% against 2.7%, while the front of the thighs grew in both groups, 4.9% and 4.6%.¹ In 17 male students over 12 weeks, deep squats to about 120 degrees of knee bend grew the front of the thigh more than shallow squats to 60 degrees.² A 2021 meta-analysis of 16 studies found that full-range training built more strength and more lower-body muscle than partial reps.³

So start with a box that puts your thighs about parallel, the crease of your hip level with the top of your knee, and lower it with mats or plates as your depth improves. A box that's too high turns the lift into a half squat with a seat under it.

Box squat vs regular squat: what the studies found

• Taking the bounce out costs little. In 8 resistance-trained men lifting 60, 70 and 80% of their max, peak force and peak power were similar overall between a squat and a box squat, which takes the bounce out of the bottom. At 70% the box squat produced slightly more peak force, and at 80% slightly more peak power; muscle activity was generally higher in the regular squat. The authors describe the differences as minimal.⁴
• The wide-stance box squat moves the body's weight back. In 12 male powerlifters lifting 30, 50 and 70% of their max as fast as they could, the box squat and the powerlifting squat were done with wide stances, about 90 centimetres between the feet against 48 for the traditional squat. In both, the shins stayed more vertical and the body's centre of mass moved back; in the traditional squat the knees travelled past the toes and it moved forward. The study measured peak turning forces at each joint: at the spine and the ankle they were largest in the traditional squat, then the powerlifting squat, then the box squat, and at the hip they were largest in the powerlifting squat. The authors' advice is to choose the version whose profile matches the training goal.⁵

Read together, a box squat is still a squat. Taking the bounce out didn't cost much force or power in the first study, and the wide-stance version changed where the turning forces fell. Both studies measured single sessions; neither trained anyone with box squats for weeks. Where your knees travel is covered on squat form.

Touch or sit, and the pause

Sitting on the box adds a pause at the bottom, and the pause has a training trial, though without a box. In 26 men over ten weeks, both groups, one squatting with a pause of about two seconds at the bottom and one bouncing out of it, improved on most strength and bar-speed tests; the pause group's gains were larger by effect size, and on the jump test the bounce group's gain was larger.⁶ Sitting on a box isn't the same as a free pause: the box takes some of your weight. The pause squat covers that trial in full.

So sitting and pausing is one way to train the bottom of the squat without the bounce, and touching lightly is the way to keep the bounce while every rep still reaches the same depth. Both are box squats; they're two tools.

Box squats in a program

No trial comparing box squats with regular squats over weeks turned up in a PubMed search for this page. One trial did use a box squat as its main squat: in 18 young men training three times a week for six weeks with the bench press, the leg press, a Smith machine box squat and jumps, box squat strength rose 27% and 35% in the two programs tested.⁷ That shows box squats can carry a program; it doesn't show they beat the regular squat. Use them as your main squat if they suit you, or as a second squat on a lighter day.

The common faults, and a fix for each

• A box that's too high. If your thighs stop above parallel, it's a half squat. Lower the box before you add weight.
• Dropping onto the box. Control the way down and sit, don't fall. If you land hard, the weight is too heavy for the depth.
• Relaxing on the box. Keep your brace and your back position; the pause is a pause, not a rest.
• Rocking to get up. Rocking back and throwing yourself forward changes the lift. Stand by pushing the floor away.
• Knees caving in on the way up. Push them out over your toes, and narrow your stance a little if they won't stay there.
• Squatting through something that hurts. Sore muscles the next day are normal; a sharp or lasting hurt in the hip or the knee isn't. Stop, and see a doctor or a physical therapist.

Sets, reps and where it goes

• As your main squat, three to five sets of 3 to 6 sit-and-pause reps, or three sets of 6 to 10 touch-and-go, stopping with a rep or two left. (How to judge reps left.) The American College of Sports Medicine's 2026 position stand found strength was enhanced by heavier loads, by two to three sets, and by doing an exercise at the beginning of a session.⁸
• As a second squat, two or three sets of 6 to 10 at a lighter weight, after a regular squat or on a second leg day.
• Progress the depth first. Lower the box a step at a time; add weight once the new depth feels the same as the old one. (Progressive overload covers the options.)
• Count it with your other squats for the week, not on top of them. A leg day needs one main squat.

If you'd rather not plan it alone

The box squat is easy to set up; deciding whether it should be your main squat or your second one, how low to set the box, and how it fits around the rest of your week, is the part a page can't do. Coaching is the version where your workouts are built around the days you actually have, and a weekly call looks at the week you just had and rebuilds the next one. Coaching to build muscle explains how that works, and here's how to apply. Otherwise: at your next leg session, set a box at parallel, do three sets of five box squats, and write down the weight.