5/3/1: Squat 1RM

12" Box Squat: 95x5, 125x5, 155x3, 185x3, 215x5, 245x3, 275x1, 315x1, 275x1.  I wanted to feel 315 on my back again.  I have toyed with getting it back, trained towards it, trained around it, for a long time and felt like I needed to actually do it just to remove the doubt.  So I did nothing else but this.  It felt a bit heavy when I racked but my back stayed straight as I squatted it and even with a 2-second pause, it came up smooth.  Now, back to the regularly scheduled loads.