Though I have a ton of promotional stuff coming up for my book that I'll probably eventually shove my foot in my mouth for. Hell, if it starts off slow I might do it intentionally to boost publicity.
So I just finished the first week of this 5/3/1 "Boring But Big" program and holy crap did that hurt. The simplicity and, frankly, the low weight had me thinking it'd be a breeze compared to what I'm used to, but by the 10th set of these core your lifts you're just done for. It's been fantastic in that painful way.