What RPE Should You Train At?
RPE (Rate of Perceived Exertion) is a subjective difficulty scale used to measure how hard a set feels and how close it is to failure.
What is RPE?
RPE stands for rate of perceived exertion. It is a subjective difficulty rating of a set you performed.
Originally developed by Dr. Gunnar Borg, later adapted into the 0–10 scale by Mike Tuchscherer for strength training.
RPE = 10 - RIR
Why Use RPE?
RPE helps regulate training stimulus vs fatigue across your program.
Most hypertrophy work sits around RPE 6+ for optimal balance between stimulus and recovery.
Fatigue and RPE
Fatigue accumulates across sessions and blocks of training.
If RPE stays too high for too long, performance will drop due to insufficient recovery.
Key idea: Stimulus must be balanced with fatigue for long-term progression.
Practical RPE Guidelines
Hypertrophy: RPE 6–9
Strength: RPE 7–9.5
Deload: RPE 5–6
Conclusion
RPE is one of the most powerful tools for managing intensity, fatigue, and progression in training.
Most lifters should stay within the RPE 6–9 range depending on goals and recovery.