CARDIOVASCULAR REGULATION
Heart rate and heart rate variability
Heart rhythm metrics as part of the wider context of load, sleep, posture and health.
EMERGINGEditorial evidence label. Factual claims must be source-checked before final publication.
HRV is not diagnosis
Variability depends on many factors and is not a standalone healthy/unhealthy index.
Trend
Comparable conditions and changes over time are more useful than one number.