The pattern users see when training load exceeds recovery capacity — trackable via HRV, RHR, and specific biomarkers.
Overreaching and overtraining syndrome sit on a spectrum. Functional overreaching (planned, brief) is part of periodized training; nonfunctional overreaching (unplanned, prolonged) requires 2+ weeks of reduced training to recover; overtraining syndrome is the severe form and can require months.
Wearable metrics (HRV trending down, RHR trending up, sleep score declining) are the earliest detectable signals — often visible 7–14 days before performance declines. Lab markers follow later: elevated cortisol, suppressed testosterone, elevated cortisol-to-testosterone ratio, elevated CK.
This is a pattern your coach or clinician interprets in context of your training program, life stress, and individual baseline. No single marker confirms overtraining — the pattern matters.
The following lab markers are commonly discussed with a licensed provider in this context. They are not a diagnostic checklist. Only your clinician can interpret what these values mean for your specific situation.
MyProtocolStack lets you log the biomarkers on this page across lab draws, chart the trend, and hand a structured report to your clinician. Better conversations start with better data. We do not replace your provider; we help you show up prepared.
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