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

One simple number could reveal more about your long-term health and longevity than you ever imagined.

Carley is a writer, editor and social media professional. Before starting at Forbes Health, she wrote for Sleepopolis and interned at PBS and Nickelodeon. She's a certified sleep science coach and ...

Sitting quietly at your desk, watching TV, or lying in bed at night, your heart should be taking it easy – beating steadily and calmly at somewhere between 60 and 80 beats per minute for most healthy ...

A new study from the German Institute of Human Nutrition Potsdam–Rehbruecke (DIfE) and Charité—Universitätsmedizin Berlin ...

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

Sleep bradycardia is a slow heart rate during sleep. It may be a natural, healthy sleep response or a sign of an underlying health issue. Most healthy adults have a heart rate between 60 and 100 beats ...

Diastolic heart failure means there’s a problem with your heart’s ability to fill with blood. It’s a type of congestive heart failure where your heart cannot work efficiently, leading to fluid ...

Heart failure is when the heart does not pump enough blood around the body. Biventricular heart failure is when chambers on both sides of the heart, known as ventricles, are affected. Doctors classify ...

These two conditions affect how well your heart can pump blood. Cardiomyopathy can sometimes lead to heart failure. Cardiomyopathy and heart failure are both conditions in which your heart has a more ...