How to do bulgarian split squats:
Find yourself a step, bench, or other contraction that you can rest your foot on, around your knee.
Get in front length with torso straight, core braid and hips square to your body, with your back foot lifted on the bench. Your guide leg must be half a meter in front of it so it is in front of a bench.
Your lower thigh is almost horizontal, keeping your knee in line with your foot. Don’t let your front knee travel beyond your toes.
Cross your front heel back to the starting position, again keeping your movements measured.
Involved muscles:
Quads, glutes.