I'm only still on block 2, but I had the realization that I could accomplish the reps and maintain the form with much less exertion. I had been squeezing my abs too tightly and trying to bring my shoulders/upper back so high off the ground that it made maintaining form and achieving the reps all but possible. Thanks to TBs I feel pretty confident about the -im. Let me know others' thoughts, if these are good enough, I'll begin work on block three in two weeks (after next week's deload).