I got the 10/20 Life 2nd edition, great read btw.  I just want to make sure I’m clear though: when you say to do 5×5, working up to RPE of 5 (if 255 was my RPE 5 that day) do you mean sets of 5 at ,for example, 215, 225, 235, 245, finishing with 255?  Am I overthinking this?