What is heart rate variability (HRV)?

Oura reports that heart rate variability (HRV) measures the variation in heartbeat timing, reflecting stress levels and ...
WTOP News

Heart Rate Variability: What It Is, How to Track It and What It Means for Your Health

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 ...
Healthline

7 Key Metrics to Track for Better Heart Health

Tracking key heart health metrics every day helps you understand how your lifestyle affects your cardiovascular system and empowers you to take proactive steps toward better heart health. Heart ...
Medscape

Baseline Heart Rate Variability and Age Predict taVNS Response

A post hoc analysis found that the effect of transcutaneous auricular vagus nerve stimulation (taVNS) on cardiac and inflammatory stress responses was critically dependent on variability in baseline ...
EurekAlert!

Variability in heart rate during sleep may reveal early signs of stroke, depression or cognitive dysfunction, new study shows

(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 ...