Micro-fluctuations in the time between heartbeats are proving a helpful indicator of mental health, stress levels, exercise ...

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 failure can occur at any age, but the elderly are at higher risk. The most common causes are coronary artery disease, high blood pressure, diabetes, obesity, and smoking. With rapidly changing ...

Guidelines may vary, but generally, heart rates greater than 120 to 150 beats per minute can be dangerous. When the heart rate is that high, a person with AFib should consider seeking medical ...

Your resting heart rate can tell you about your fitness and stress.

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.

This secret to improving your cardiovascular health and endurance: zone 2 heart rate training. Zone 2 cardio rate training means working in one of five heart rate zones at 60-70% of your max heart ...