What is Box Squat?

What is Box Squat?

A box squat has the lifter squat back and down onto a box or bench set to a specific height, briefly sit with the weight fully supported, and then stand back up without rocking or bouncing off the surface. Because the weight settles completely at the bottom, the usual elastic rebound (stretch reflex) that helps a regular squat out of the hole is removed, forcing the hips, hamstrings, and glutes to generate the standing-up force from a true dead stop.

How it works

The lifter sets a box or bench to the target depth, squats back — not straight down — until fully seated, and pauses briefly with the brace and arch still tight before driving back up. Removing the stretch reflex means the muscles can't rely on stored elastic energy from the descent, so the ascent has to be generated purely concentrically, which is why box squats are considered a strong tool for building starting strength out of the bottom position. Swinton et al. (2012) found meaningful kinematic and kinetic differences between the traditional squat, powerlifting squat, and box squat, reflecting how the paused, box-supported bottom changes the lift's demands.

How to apply it

• Set the box to your target depth: Choose a box or bench height that puts your hip crease at or just below your kneecap — roughly parallel depth or slightly below.
• Squat back, not down: Push the hips back and down toward the box like sitting into a chair, rather than dropping straight down, to keep tension on the hips and hamstrings.
• Sit, don't bounce: Let your weight settle fully onto the box for a brief moment without relaxing your brace or rocking, then drive back up under control — no bouncing or rocking off the box.
• Drive up with the hips and hamstrings: Initiate the ascent by driving the hips forward and up, using the pause to emphasize starting strength out of a static position.

Worked example

Say you box squat 100 kg for 3 sets of 5, used as a dynamic-effort accessory alongside your main squat. Here's a simple 4-week wave.

Many lifters cycle box squats as a speed or dynamic-effort exercise at lighter percentages rather than always chasing a straight-weight max — the pause and dead-stop start are the point, not just the load.

Box squat vs regular (free) squat

Box squats are typically a training tool layered alongside the regular squat, not a full replacement, since competition rules don't allow pausing on a box mid-lift.

By goal

• Powerlifters using conjugate/Westside-style programming: Box squats are a dynamic-effort staple, cycled at lighter percentages for speed and volume between max-effort squat and deadlift days.
• Lifters who 'bounce' out of the hole: Box squats remove the stretch reflex, exposing and fixing weak starting strength at the bottom of the lift.
• Lifters returning from a back or knee tweak: A controlled, paused descent to a set depth can help manage load and rebuild confidence at the bottom position.

Common misconceptions

• "Box squats mean you rock back and use momentum to stand up." Westside's own teaching explicitly avoids rocking or a bounce off the box — the lifter sits fully still for a moment and then drives up using pure concentric strength, not momentum.
• "The box squat is a shortcut, easier version of the squat." Removing the stretch reflex actually makes the concentric portion harder pound-for-pound, which is exactly why it's used to build starting strength out of the hole.
• "Box height doesn't matter." Box height sets the depth and joint angles trained — a box set too high trains a partial range of motion, while one set to full depth trains the same range as a competition squat.

Related terms

Box Squat FAQ

What is the point of a box squat?

A box squat pauses the bottom of the squat on a box, removing the stretch reflex so the lifter has to generate all the standing-up force concentrically — this specifically targets starting strength out of the bottom position.

How high should the box be for a box squat?

Most lifters set the box so the hip crease reaches parallel or slightly below at the seated position, though the exact height can be adjusted to target a specific depth or a known weak point in the lift.

Do you bounce on a box squat?

No — proper box squat technique has the lifter sit fully still for a brief moment before driving back up; rocking or bouncing off the box defeats the purpose of removing the stretch reflex.

Who invented the box squat?

The box squat is most closely associated with powerlifting coach Louie Simmons and Westside Barbell's conjugate method, though variations of pausing a squat on a support have long been used in strength training.

Is box squat good for beginners?

Box squats can help beginners learn consistent depth and a hip-back squatting pattern, but the paused, dead-stop nature makes them best introduced after the regular squat pattern is reasonably comfortable.

References

1. Swinton PA, Lloyd R, Keogh JWL, Agouris I, Stewart AD. A biomechanical comparison of the traditional squat, powerlifting squat, and box squat. J Strength Cond Res, 2012;26(7):1805-1816. PubMed 22505136
2. Box Squats: How to Box Squat Correctly. Westside Barbell
3. From the Field: A Closer Look at Squat Variations. NSCA
4. American College of Sports Medicine. Progression models in resistance training for healthy adults (Position Stand). Med Sci Sports Exerc, 2009;41(3):687-708. PubMed 19204579