The Bulgarian Split Squat: Set It Up Right and Progress It
The Bulgarian split squat is a single-leg squat with your back foot raised on a bench behind you. Most people hate it because they set it up badly: the bench is too high, the front foot is too close, and they spend the set fighting for balance instead of working the leg. Get three things right - a bench at roughly knee height, a front foot far enough forward that your shin stays fairly upright at the bottom, and the back foot resting lightly as a kickstand - and it becomes one of the most productive leg exercises there is. Start with bodyweight, then add dumbbells.
Why it is worth the discomfort
A bilateral squat lets your stronger side quietly do more of the work. Put one leg in charge and the imbalance has nowhere to hide. The Bulgarian split squat also loads the front leg heavily while the spine carries comparatively little, because the weight you need is far lower than for a back squat. For people with a cranky lower back, or no access to a rack, that trade is useful.
It also trains the hip through a long range. At the bottom, the rear leg’s hip flexors are on stretch and the front glute is working hard from a deep position, which is exactly where desk-bound hips tend to be weakest.
The setup, measured rather than guessed
- Bench height. Aim for something at or slightly below knee height. A standard flat bench is usually right for people of average height; very tall lifters can go a touch higher, shorter lifters lower. Too high and your lower back arches to compensate.
- Find your distance. Sit on the edge of the bench, extend one leg straight out in front, and place your heel where it lands. Stand up into that position. It is a reliable starting point, which you can then adjust by a few centimetres.
- Back foot. Laces down on the bench is comfortable for most. Toes tucked is fine too if your ankle prefers it. The rear foot is a balance point, not a pushing leg.
- Stance width. Keep the feet on two separate train tracks, roughly hip width apart, not on a tightrope. This alone solves most wobbling.
- Descend. Lower straight down, as if your back knee is heading for a spot just behind your front heel. Stop when the back knee is a few centimetres from the floor or your front hip is level with or just below the knee.
- Drive up through the whole front foot, keeping the knee tracking in line with the second and third toes.
Glutes or quads: torso angle is the dial
Keep your torso fairly upright and the front shin travels forward more, and the quads take the bigger share. Lean the torso forward by 20 to 30 degrees from the hips, with a slightly longer stance, and the glutes and adductors work harder. Neither is wrong. Choose deliberately and keep it consistent within a block so your progress is measurable. If knees are the sensitive joint, the forward lean and longer stance tend to be friendlier.
Common faults and quick fixes
| What happens | Likely cause | Fix |
|---|---|---|
| Wobbling side to side | Feet in a straight line | Widen to hip-width tracks; hold something with one hand for a few weeks |
| Front heel lifts | Foot too close to the bench | Move the front foot forward a few centimetres |
| Burning front of the back thigh, little in the front leg | Bench too high, or pushing with the back leg | Lower the bench; let the rear foot rest lightly |
| Front knee caves in | Fatigue or too much load | Reduce weight, slow the lowering phase, think “knee over little toes” |
| Lower back arches at the bottom | Tight hip flexors on the rear leg | Lower the bench, tuck the pelvis slightly, shorten range for now |
If you need to work on the stiff-hip side of that last row, our post on hip mobility exercises for desk-bound hips covers the drills that help most.
How to progress it
Treat the exercise as a ladder. Move up only when you can do every set at the top of the rep range with clean form.
- Split squat with both feet on the floor (no bench). If the Bulgarian version is a balance fight, start here. The difference between the two is covered in split squat vs lunge.
- Bodyweight Bulgarian split squat, 2 to 3 sets of 8 to 12 each leg, holding a rack or upright with one hand if needed.
- Goblet hold: one dumbbell at the chest. Easier to balance than two at the sides for many people.
- Two dumbbells at your sides. This is where most people should live for months. Add 1 to 2 kg per hand when you hit the top of the range.
- Tempo work: three seconds down, a one-second pause near the bottom. Brutal at light weights and excellent when dumbbells run out.
- Barbell on the back, using the safety arms of a squat rack. Only once balance is solid; the setup is fiddly and the bar makes it harder to bail.
Always start with your weaker leg, and match the reps on the stronger side to it. Rest 60 to 90 seconds between legs if you need it. The first couple of sessions will make you sore in the glutes and front thigh for a day or two. That settles quickly once the exercise is a regular part of the week.
Where it fits in a programme
It works well as the second leg exercise of a session, after a squat or hinge, for 2 to 4 sets. On days when your back is tired or the rack is not available, it can be the main lift. Do not put it after a hard set of walking lunges unless you enjoy suffering for no extra gain: they hit the same muscles in a similar way.
If you have a current knee, hip or back injury, are pregnant, or are returning after a long break, check with your GP or physiotherapist before loading single-leg work. The NHS guide to strength exercises is a sensible primer if you are starting from zero.
Getting it coached
The Bulgarian split squat is a classic example of an exercise where five minutes of adjustment changes everything. In a session with a Highgate personal trainer we would film a set, move your foot, change the bench height, and usually find the version that feels like work rather than a balance test within a couple of sets. Our basement studio under The Highgate House has the bench, dumbbell rack and squat rack for every step of the ladder above, and it is booked to you alone while you train.
Questions we get asked
Why is the Bulgarian split squat so much harder than a lunge?
The back leg can barely help, so the front leg handles nearly all the load, and you stay under tension for the whole set rather than resetting each step.
How heavy should I go?
Much lighter than you expect. Many reasonably strong people start with 8 to 12 kg dumbbells in each hand. Pick a weight that leaves one or two reps in reserve.
Can I do it at home?
Yes. A sturdy sofa or a stair step at roughly knee height works, provided it will not slide. Start with bodyweight.
Should my back knee touch the floor?
Lightly brushing a pad is fine. Banging it is not. Most people stop a few centimetres short.
Book with The Highgate House
Ready to start training properly? Email us at [email protected] with the service and the day that suits you, and we will come back to you with times.
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