Heart rate variability is one of the main things your smartwatch or fitness tracker measures. Here's what it means.

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 ...

Variable universal life insurance (VUL) offers flexibility, but it also comes with investment risk. Many, or all, of the products featured on this page are from our advertising partners who compensate ...

(The Conversation) – Your heart beats around 100,000 times every day. Heart rate is a key marker of cardiovascular activity and an important vital sign. But your pulse is not as steady as a precision ...

One overlooked metric that may affect your sleep is your heart rate variability. Here's the link between HRV and your sleep quality. Luke Daugherty is a freelance writer, editor and former operations ...

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, ...

Variable life insurance is a type of permanent life insurance that provides lifelong coverage and includes an investment component that allows the cash value to grow over time. It offers a way to ...

Analysis of variance (ANOVA) is a statistical analysis tool that separates total variability found within a data set into two components: random and systematic factors.