The Smith Machine stabilizes the path, you can push closer to failure, control the descent, and keep both versions brutally effective for muscle growth. The Smith Machine split squat lets you target either quads or glutes — just by changing your shin angle and torso position: 🔹 Quad-biased: \t•\tMore upright torso (this doesn’t matter a ton) \t•\tShin moves horizontally \t•\tKnee tracks forward ➡️ Maximizes knee flexion = more quad loading 🔹 Glute-biased: \t•\tSlight forward torso lean (again,