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, ...

Heart rate variability typically decreases during stressful situations, although the heart rate increases. Managing stress levels can mean a more variable heart rate. Exercise and relaxation ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. As a cardiovascular physiologist, I measure ...

These days, it may seem like there’s a million different data points that you’re supposed to keep track of—hello, steps, sleep, and recovery scores!—and it’s difficult to know which ones are worth ...

The rhythmic beating of your heart tells a more complex story than most realize. While standard health assessments typically focus on heart rate, the subtle variations between individual heartbeats ...

Even mild dehydration can negatively affect your brain functioning and attention span, so it could be holding you back at work and getting in the way of your goals. Drinking a glass of water could ...