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 ...

Heart rate variability, or HRV, is quickly becoming one of the most important metrics in modern fitness, and for good reason. Unlike heart rate, which tells you how fast your heart is beating, HRV ...

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, often shortened to HRV, has become one of the most popular recovery metrics in fitness. While resting ...

New research from Murdoch University has found that using a heart rate monitor can help improve PTSD and chronic pain symptoms. A new study led by researchers from Murdoch University’s School of ...

Altered autonomic nervous system activity is linked to specific sleep disturbances, with distinct sex-based patterns.

Carley is a writer, editor and social media professional. Before starting at Forbes Health, she wrote for Sleepopolis and interned at PBS and Nickelodeon. She's a certified sleep science coach and ...

Samsung’s next Galaxy Watch update uses AI to turn complex health data into clearer daily guidance.

Men’s Fitness aims to feature only the best products and services. If you buy something via one of our links, we may earn a commission. Heart rate variability, or HRV, is quickly becoming one of the ...