We think the common RPE/RIR recommendations leave a lot to be desired. Check out our guide to gain a conceptual understading and the practical knowledge to optimize proximity to failure for both strength and size.
The 7 page guide is broken into the following sections:
1) Introduction to RPE/RIR
2) Commonly Proposed Model
3) RPE/RIR for Strength
4) RPE/RIR for Hypertrophy
5) Practical Applications