# RPE

RPE (rating of perceived exertion) is a 1–10 scale of how hard a set or session feels.

In strength training, RPE 8 usually means about two reps left in reserve. It lets training adapt to the day: the same RPE can mean a lighter load after a poor night's sleep.

Also called: Rating of perceived exertion, RIR.

Related: [Progressive overload](https://revns.com/dictionary/progressive-overload.md), [One-rep max](https://revns.com/dictionary/one-rep-max.md)

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revns gives training guidance, not medical advice.