By Jacob Chambers, Founder & Lead Reviewer · Updated 27 June 2026
The Bulgarian split squat, also called the rear-foot-elevated split squat, is a single-leg squat where your back foot rests on a bench behind you while your front leg does almost all of the work. By loading one leg at a time, it builds serious quad and glute strength, exposes the imbalance between your left and right sides, and challenges your balance in a way that two-legged squats never do. You need very little kit, a bench or sofa and a pair of dumbbells will do, which makes it one of the best lower-body exercises for training at home. Here is how to do it properly, the muscles it hits, and how to get the most from it.
You need a knee-height bench, box or sturdy chair behind you, and optionally a dumbbell in each hand. Get the bodyweight version smooth before you add load.
The cue that fixes most wobble
Push the floor away through the front heel and squeeze that glute hard as you stand. Most balance problems come from drifting onto the toes or leaning on the back foot. If you are still unsteady, lightly rest two fingers on a wall or a squat rack upright until your balance catches up, then let go.
The Bulgarian split squat is a front-leg exercise with a big balance and core tax on top, because standing on one foot forces every stabiliser around your hip and ankle to work.
That single-leg demand is why a pair of adjustable dumbbells or a couple of kettlebells goes a long way here, you rarely need much weight to make the movement brutal.
Pushing off the back foot. The back leg is a kickstand, not an engine. If you feel the burn in your back thigh or the front of your back hip, shift your weight forward and drive up through the front heel so the front leg does the work.
A stride that is too short. Setting the front foot too close lets the knee shoot well past the toes and the heel lift. Step the front foot further forward until your shin can stay close to vertical and your whole foot stays planted.
The front knee caving in. Letting the knee drop inward wastes power and nags the joint. Actively spread the floor and push the knee out in line with your toes through every rep.
Going too heavy too soon. Balance fails long before your muscles do at first. Master clean, controlled bodyweight reps, then add small dumbbells before chasing big numbers.
Mismatched legs. It is easy to grind out more reps on your strong side and quietly let the weak side lag, which defeats the point. Train the weaker leg first and let it set the rep and weight target for both sides.
Once the standard version feels solid, use these to keep progressing or to shift the emphasis.
If single-leg balance is still a struggle, build the base first with the two-footed goblet squat, then come back. For more lower-body movements, browse our workouts hub.
A simple plan that works for most people:
Add weight only once you can hit the top of your rep range on both legs with clean form. Because the working leg shoulders so much of your bodyweight, small jumps go a long way.
The Bulgarian split squat mainly works the quads and glutes of your front leg, with strong support from the hamstrings and adductors (inner thigh). Your calves and the small stabilising muscles around your hips and ankles fire constantly to keep you balanced, and your core braces to stop you tipping. Research suggests it leans slightly more hip-dominant than a back squat, so the glutes get a real share of the work.
Set your front foot far enough forward that, at the bottom of the rep, your front shin stays close to vertical and your knee sits roughly over your mid-foot. If your front knee shoots well past your toes and your heel lifts, step further forward. If you feel a stretch pulling at the front of your back hip, you are probably too far forward, so bring the foot back a touch. A stride of around 60cm to 90cm suits most people.
Yes, the two names describe the same movement. Rear-foot-elevated split squat (often shortened to RFESS) is just the literal, more descriptive term, and many coaches prefer it. The name Bulgarian split squat stuck from the 1980s Bulgarian weightlifting team, but mechanically there is no difference. Use whichever term you like.
They load one leg at a time, so your working leg handles a much bigger share of your bodyweight than it would in a normal squat. On top of that you have to balance on a single foot while the back leg gives little help, which recruits extra stabilising muscles and spikes your heart rate. That combination of high muscular and balance demand is exactly why they build strength so well, and why a little weight feels like a lot.
You should feel it almost entirely in the front leg, in the quad and glute. The back leg is just a kickstand for balance, not a mover, so keep most of your weight over the front foot. If your back thigh or the front of your back hip is doing the burning, you are pushing off the rear foot too much, so shift your weight forward and drive up through the front heel.
For strength and muscle, 3 to 4 sets of 8 to 12 reps per leg, done once or twice a week, works well. They are demanding, so some lifters get plenty from just 1 to 2 hard sets per leg. Always match the rep count on both legs, working your weaker side first and letting it set the target. Rest 60 to 90 seconds between sets.
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