wearable × lab
Your HRV drop lines up with your ferritin trend.
Resting HRV is down 11% over 90 days, and your training has not changed much. Over the same stretch, ferritin has fallen on each draw and now sits at 14 ng/mL, below the lab's range. A question to bring to your clinician: is iron worth checking as a factor in my lower HRV?