Unilateral loading corrects left-right imbalances that bilateral squats can mask. The deep hip flexion and large ROM hits quads, hamstrings, and glutes through their full length-tension curve.
Unilateral correction — each leg works independently, preventing the dominant leg from compensating.
Muscle breadth 11/15 — hits quads, hamstrings, and glutes through a large range of motion.
Stretch-under-load — the trailing leg's hip flexors and the working leg's glutes reach near-maximal stretch at the bottom.
Placed third as a unilateral finisher for quads before transitioning to hamstrings.