Proper form is crucial when it comes to the Bulgarian split squat. To ensure you're doing the exercise correctly, make sure your front foot is planted firmly on the ground, with your knee directly above your ankle. Your back leg should be extended behind you and your back foot should be resting on a bench or other elevated surface. As you lower your body down into the squat, keep your torso upright and your core engaged. If you're not sure if you're doing the exercise correctly, consider working with a personal trainer or fitness professional who can help you with your form.