The libraryStrength
RPE / RIR autoregulation
At RPE 8 you've got about 2 good reps left, and an experienced lifter calls that honestly.
Who it's forAny man who's trained long enough to know what one more rep feels like.
Emergency: call 911.
I am not a doctor. This is not medical advice. This is self-education. Talk to a physician who has your history before you change anything.