Without any doubt, my F1 Nemesis is HBP/PE2. I'm currently in the 9-reps-per-set stage and they are KILLING me, more than any other exercise. I could do 4x6r but the jump from 4x6r to 4x9r (and then 5x9r!) felt extreme.
These are my numbers from the past few sessions:
Week 6 session 1: 2x9, 1x6, 1x5 (total 29 out of the required 36 reps)
Week 6 session 2: 3x9, 1x5 (total 32/36 reps)
Week 7 session 1: 2x9, 1x8, 1x6, 1x4 (total 36/45 reps)
It seems I'm still progressing but this will be the first microcycle that I'm going to be repeating one or two times before moving on.
So, I'm curious.... what is the single hardest F1 exercise for you?? And is there anyone else who is extremely challenged by HBP/PE2?