Here’s what HRV is, how it works and what can cause it to rise or fall.

Heart rate variability (HRV) is the variation in the time between two consecutive heartbeats over a specific period. Doctors may use HRV as an indicator for certain aspects of a person’s health, ...

What is heart rate variability (HRV)? As popular as the metaphor may be, a healthy heart doesn’t beat as regularly as a metronome. In fact, it changes its rhythm with each beat. Heart rate variability ...

New research suggests the menstrual cycle may influence heart rate, stress levels and nervous system activity, highlighting important changes in women’s overall heart health.

Did you know there’s a number that might let you know how stressed you are, whether you have a cold coming on and how to get into the zone if you’re about to present at a big meeting? You can find ...

The variation in heart rate in phase with breathing is called respiratory heart rate variability (RespHRV). Relaxation and positive socio-emotional states can amplify RespHRV, yet the underlying ...