Micro-fluctuations in the time between heartbeats are proving a helpful indicator of mental health, stress levels, exercise ...

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 ...

You might be familiar with HRV—heart rate variability—as a popular training tool for workouts and a biomarker for measuring exercise recovery. Beyond exercise tracking, heart rate variability has a ...

Heart rate variability during sleep can predict stroke, depression or cognitive dysfunction years in advance, according to new research presented at the European Academy of Neurology Congress. The ...

Heart rate variability has become the wellness scene’s favorite recovery score, but experts say most people misunderstand the ...

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, presented today at the European Academy of Neurology (EAN) Congress 2025, has uncovered a powerful link between nighttime heart rhythm and future health conditions, even in people with ...

Your smartwatch may track HRV automatically, but age plays a major role in what counts as a healthy score ...

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