Use post-session RPE review to detect overreaching early

Track the RPE drift across a training block — rising RPE at the same load is the earliest signal of overreaching.

Why it works

Overreaching (accumulated fatigue beyond recovery capacity) manifests as a rightward shift in the RPE-load relationship: the same absolute load that previously felt like a 7/10 now feels like an 8.5/10. This shift occurs before performance degrades and before injury risk peaks, making it the most sensitive early warning available without blood testing. Tracking RPE longitudinally at the same loads makes this drift visible.

How to do it

1. Tag one or two standard efforts per week as "benchmark sets" — same exercise, same approximate load.
2. Log RPE for these sets every week and graph it over the training block.
3. If RPE at the same load rises by more than 1.5 points over 2 weeks, insert a deload.
4. Distinguish RPE drift (fatigue) from RPE improvement (fitness gain) — both change the relationship.

Evidence

RPE drift as an overreaching indicator is consistent with the known psychophysiology of fatigue: perceived exertion rises relative to objective load as the central nervous system and muscular system accumulate fatigue. This is mechanistically sound and used in athlete monitoring practice. (mechanistic)

Formal longitudinal trials using RPE drift as an overreaching detector are limited; most evidence is from practitioner application of the broader fatigue-RPE relationship.

Common mistake

Attributing rising RPE to "a bad day" and pushing through rather than recognizing it as a two-week pattern that precedes overreaching — the error is treating each data point in isolation rather than as a trend.