Micro-fluctuations in the time between heartbeats are proving a helpful indicator of mental health, stress levels, exercise capacity and even how well you are ageing.

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 ...

Wearable technology provides athletes with a constant stream of metrics like heart rate variability and recovery, often ...

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 ...

You probably check your step count religiously, maybe glance at your heart rate during workouts, and might even pay attention to how many calories your fitness tracker claims you’ve burned. But ...

The rhythmic beating of your heart tells a more complex story than most realize. While standard health assessments typically focus on heart rate, the subtle variations between individual heartbeats ...

My Garmin has turned me into an addict. I have become hooked on alcohol-free beer. It all began a few months ago when I was flicking through data on my new watch after a long weekend of late nights ...

Scientists have discovered that exercise remodels the heart's nerves and changes how it regulates its heartbeat and responds to stress.

Abnormal low heart rate variability (HRV) is associated with both medical and psychiatric disorders. HRV biofeedback is a recently developed technique that aims to modulate HRV in ways that have ...