RPE Scale Guide

RPE stands for Rate of Perceived Exertion — a simple 0-10 scale clients and trainers use to describe how hard a set felt. It's a subjective measure, but a consistent one, and it's one of the fastest ways to track fatigue and effort without extra equipment.

The RPE Scale

RPE is most useful when tied to reps in reserve (RIR) — how many more reps you could have done before failure.

Logging RPE in FitFlow

During a logged session, each set row shows an Intensity (RPE) selector below the weight and reps fields — a horizontal 1–10 strip where you tap the number that matches how hard the set felt. Logging RPE alongside weight and reps gives a fuller picture of a set than the numbers alone.

Why Trainers Use It

• Autoregulation — RPE lets a program adjust to how a client is actually feeling that day, rather than only prescribing fixed weights.
• Fatigue signal — A rising RPE at the same weight and reps over time can flag accumulating fatigue before it shows up as a missed rep or a stalled lift.
• Context for progression decisions — Reviewing RPE trends alongside completed sets helps decide whether to hold, increase, or deload the next session's load.

Tips for Consistent Ratings

• Rate the set right after finishing it, while the effort is still fresh.
• Be honest rather than optimistic — a 10 should mean truly no reps left, not "felt hard."
• If every set is logged as an 8-9, it's worth checking in on whether the scale is being used consistently or effort is being over/under-reported.

RPE is a training tool, not a diagnostic one — it reflects perceived effort, not a measurement of health, injury risk, or medical status.