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 ...

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

(Helsinki, Finland, Saturday, 21 June 2025) New research, presented today at the European Academy of Neurology (EAN) Congress 2025, has uncovered a powerful link between nighttime heart rhythm and ...

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 ...

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 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 ...

Wearables can offer rough information about a person’s health, experts say, but only some metrics are medically useful.

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, ...

Bedtime may matter just as much for your health as the number of hours you sleep. A consistent bedtime could especially ...

Adults who go to bed at wildly different times from one night to the next face more than double the risk of heart attack, ...

Pediatric obstructive sleep apnea (OSA) is associated with autonomic dysfunction and impaired quality-of-life (QoL). This study investigated whether weight status modifies the impact of OSA severity ...