FAQ · Athletes
Cortisol, HRV & Training: Athlete FAQ
Wearable records can support a training conversation. They cannot tell you that cortisol caused a performance change.
Does a low HRV reading mean I am overtraining?
No. Cortisol+ has no validated HRV threshold for diagnosing overtraining. Check the measurement method, timestamp and your own history. Discuss persistent performance changes or symptoms with an appropriate professional rather than making a diagnosis from the score.
What percentage drop means I should deload?
There is no universal Cortisol+ cutoff. Our earlier website suggestion of a 10% HRV drop plus a 5 bpm resting-heart-rate increase was not a validated app rule. Your training plan, performance, symptoms and recovery context matter.
Can the app measure my training cortisol?
No. It uses available Apple Health records and model assumptions to create a wellness score. It cannot determine whether an exercise-related hormone response has returned to normal.
How can I use the app with my coach?
Review comparable HRV and sleep records alongside a training log. Note the session, how you felt and whether the wearable record was complete. Share only the information you choose; the app score is context, not a prescribed training load.
Can the score show whether a recovery supplement worked?
No. A before-and-after change cannot isolate a supplement effect or establish a hormone change. The app should not be used to select supplements or replace advice about persistent symptoms.