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

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 ...

Fitness trackers and smart watches are widely popular wearable devices that measure several types of health metrics, including step count, calories burned, sleep quality, Vo2 max and heart rate. As a ...

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, ...

It’s been known for decades that heart rate variability (HRV) during labor signals how a fetus is responding to stress. Lower HRV—a lower variation in heartbeats—is even a risk factor for sudden ...

Menstrual cycle or periods are instrumental in a woman’s life. Any irregularity is linked to hormonal imbalance or underlying conditions. A new study has found that the different phases of the ...

Ever check your smartwatch or Oura ring and notice your resting heart rate is higher than you expect? You do your best to ...

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.