The Bulgarian split squat is a brutal single-leg builder for the quads and glutes that also exposes and fixes strength imbalances.
FormTwin gives you a living 3D twin of your anatomy. Tap any muscle to see how to train it, and watch the muscles you work light up as you log your sessions.
Get FormTwin — free on the App StoreIt targets the quads and glutes of the front leg intensely, with the adductors, hamstrings and core assisting. Leaning forward slightly biases the glutes; staying upright biases the quads.
All the load goes through one leg while you balance, so they demand a lot from the target muscles and stabilisers even with light dumbbells. That's also why they're so effective.
Both — you can shift the emphasis. A forward torso lean and longer stance hit the glutes more; a taller torso and shorter stance emphasise the quads.
This guide is general fitness information, not medical advice. Muscle involvement varies with form, grip and individual anatomy. Consult a professional before starting a new program.