What is RPE and how does it work? Watch these videos for a background on what RPE is, how to use it in your training, and how to judge your RPE's on your training sets:
RPE background info: https://www.youtube.com/watch?v=TAAUG-9MK9c
https://youtu.be/0_JJZHKUV5U
https://youtu.be/WXQaEq4_2lY
https://youtu.be/2xEYSsfiWIE
How to read the workout protocol? Ex. " 1 rep @ RPE 7 // then use 72.5% of your 1RM 3 x 5 reps " For the example, this just means that your top set will just be 1 rep and you will perform that rep at an RPE of 7. Then for your backdown sets, you'll use 72.5% of what your current estimated one rep max is for another 3 sets of 5 reps. For example, if your estimated max is 405 lbs on squat, then you'll use 72.5% of that, so about 295 lbs. for your backdown sets.