re: Box squats

When box squatting make you you watch your pelvic rotation when seated. You want to hinge at the hip and not do any pelvic tilting. The moment you start tilting your pelvis is the moment you start adding ungodly amounts of shearing forces to your spine. If you can keep that from happening box squats are a great exercise. I agree with the safety squat bar comment as well. Coupling box squats with the ssb is great work.