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 disease continues to stand as the No. 1 cause of death in the United States. Coronary heart disease, the most common type of heart disease in the U.S., was responsible for the deaths of nearly ...

Heart cancer happens when diseased cells grow out of control on or near your heart, forming a tumour. Doctors say cancer begins in your heart, known as primary heart cancer, or even spreads there from ...

PRINTED ON TREADMILLS and exercise bikes in gyms around the world is a simple method for estimating the maximum rate at which your heart should safely beat, in beats per minute: 220 minus your age.

In an age where nearly everyone wants to measure and optimize their health, wearable devices have become a part of everyday life. Many people now use fitness trackers to count their steps, ...