The Core Metric

Heart Rate Variability (HRV) measures the specific time intervals between your heartbeats. Unlike BPM, a higher HRV is generally a sign of a resilient, well-recovered body.

Intuition Meets Insight

Have you ever woken up feeling "off" despite getting eight hours of sleep? That is your HRV talking. It reflects the balance between your sympathetic (fight or flight) and parasympathetic (rest and digest) systems.

The Petal Perspective

HRV is your readiness score. By monitoring these subtle fluctuations, Petal empowers you to decide whether today is a day for a PR in the gym or a much-needed day of deep rest.