To do a Bulgarian split squat, place your rear foot on a bench, step your front foot 2-3 feet forward, and lower straight down until your front thigh is parallel to the floor, then drive back up through your front heel. That description sounds simple. The execution will humble you on day one.
I have been coaching for 13 years. Bulgarian split squats are in almost every CoachCMFit program because they solve a problem that bilateral squats cannot: they train each leg individually, expose imbalances, and build the kind of single-leg strength that transfers to everything from walking to sport to daily life. When a client tells me one glute is lagging or one quad is weaker, BSS is my first tool.
The catch: most people set them up wrong, then wonder why their knee hurts and their balance is terrible. The setup determines everything.
Step-by-Step Setup
- Find a flat bench. Roughly knee height. A standard gym bench works. A box or even a couch works at home.
- Stand facing away from the bench, about 2 feet in front of it. Place the top of your rear foot flat on the bench surface, laces down. Your rear knee should be able to drop toward the floor comfortably.
- Hop your front foot forward until it is far enough that your front shin stays close to vertical at the bottom of the movement. This is the most important cue. Too close and your knee crashes forward excessively. Too far and you pitch forward at the torso.
- Stand tall. Shoulders back, core braced. Take your breath before each rep.
- Lower straight down by bending your front knee and allowing your rear knee to drop toward the floor. Think "down" not "forward." Your hips should descend, not your chest.
- Stop when your front thigh hits parallel to the floor, or when your rear knee is 1-2 inches from the ground.
- Drive through your front heel to stand back up. Exhale as you rise.
Do all reps on one leg before switching. This keeps the muscle under more total time under tension and lets you feel the difference between sides clearly.
Why This Exercise Is So Effective
The Bulgarian split squat hits the quadriceps through a longer range of motion than a bilateral squat for most people. The elevated rear foot increases hip flexor stretch at the bottom, which adds a mobility demand on top of the strength demand. And because each leg works independently, your nervous system cannot compensate by shifting load to the stronger side, which is exactly what happens during bilateral squats.
A 2019 study published in the Journal of Strength and Conditioning Research compared bilateral back squats to Bulgarian split squats in trained athletes and found that BSS produced similar or greater quad activation at lower absolute loads, meaning you can achieve the same training stimulus with less weight on your spine. This makes it a lower-risk alternative for people with back issues.
Research from the University of Saskatchewan found that unilateral leg exercises like the BSS produce greater improvements in single-leg strength and functional movement tests than bilateral training alone. For real-world strength transfer, unilateral work is irreplaceable.
Foot Position: The Variable That Changes Everything
There are two distinct foot positions for BSS and they train different things. This is the piece most articles miss.
Front Foot Close (Quad Emphasis)
Front foot stays relatively close to the bench, roughly 18-24 inches. Your torso stays upright. Your front knee tracks over your toes and travels forward during the descent. This position loads the quadriceps heavily. The front shin angle is more forward, the knee drives over the toe, and the quads do most of the work.
This is the version I use when quad development is the goal.
Front Foot Far (Glute Emphasis)
Front foot moves farther from the bench, roughly 30-36 inches depending on your height. Your torso leans slightly forward. Your hips hinge more at the bottom. The glutes and hamstrings take on more load. This is closer to a split squat lunge variation than a quad-dominant movement.
This is the version I use when someone needs more glute work, or when their ankle mobility limits the closer stance.
The most common mistake I see: rear foot too close to the bench. When the rear foot is close, the rear knee cannot drop naturally and people compensate by pitching forward at the chest. Step the front foot farther away first. Most people need more distance than they think. If your torso is folding forward dramatically, front foot needs to move forward, not back.
Progressions: Start Here, Build to There
| Level | Exercise | Notes |
|---|---|---|
| Beginner | Bodyweight BSS | Hands on hips or lightly holding a rack for balance. Master the pattern before adding load. |
| Beginner+ | Goblet BSS (dumbbell held at chest) | 10-20 lb dumbbell adds load and counterbalance. Easier to stay upright. |
| Intermediate | Dumbbell BSS (dumbbells at sides) | Standard loaded version. 20-50 lbs per hand for most trained individuals. |
| Advanced | Barbell BSS (back rack or front rack) | Heavier loading, more balance challenge. Back rack is more common. Front rack is more core-demanding. |
| Advanced+ | Deficit BSS (front foot elevated) | Front foot on a 2-4 inch plate or step. Deeper range, more quad stretch. Not for beginners. |
How CoachCMFit Programs Bulgarian Split Squats
In CoachCMFit programs, BSS is almost always an accessory compound, not an anchor. Bilateral squats or Romanian deadlifts handle the anchor role. BSS comes in as a secondary compound, typically in the B slot of the session.
Standard prescription: 3 sets x 10-12 reps per leg, 90 seconds rest between sets. I program them in the early build block (weeks 5-8), after clients have learned the bilateral patterns and have the hip mobility to execute a clean setup. In weeks 1-4, I prefer reverse lunges as the unilateral leg work because the setup is simpler.
One key note on breathing: the balance demand of BSS means your brace matters even more than on a bilateral squat. Read how to breathe when lifting weights and apply the Valsalva protocol to every rep. Your balance will immediately improve.
For calves, the BSS also provides significant ankle mobility demand. If your calves are very tight, you'll feel it during the descent. Building calf flexibility alongside BSS training is worth the 5 minutes. Check out the best calf exercises for the full stretching and strengthening protocol.
The Balance Fix That Works in 30 Seconds
If you are wobbling during BSS, before you blame your balance, check your rear foot position. The top of the foot should be flat on the bench with the ankle relaxed. If you are on your toes or your ankle is flexed upward, your hip flexor is fighting you. Lay the top of the foot flat, let the ankle go completely limp, and your stability will jump immediately. I see this fix work on almost every new client who struggles with the exercise.