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 ...

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 ...

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 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 ...

Stanford University researchers have developed an artificial intelligence system capable of predicting an individual's future ...

Wearables are best at noticing breaks from your body's usual patterns. Those outliers can hint that something warrants ...

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 ...

Millions of people around the world wear smart rings and fitness trackers to keep tabs on their sleep, workouts, heart rate ...

These runners showed what it looks like to prepare the nervous system the same way you’d prepare your muscles.” ...

After closing tracking health trends ranging from stress to sleep scores, one reporter also turned to experts help explain the data.