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 ...

To live is to have a heartbeat, which is why it makes sense for us living things to have a good understanding of our ticker. It’s well-known science that our hearts beat faster when we exercise and ...

Heart disease is a growing concern in India. In recent years, rates of heart attacks have jumped sharply and now affect many people far younger than in Western countries. One big factor? High levels ...

Worrying about money and food may age the heart even faster than traditional risk factors of cardiovascular disease, according to a new study published in the journal Mayo Clinic Proceedings. Heart ...

This article was made possible by the support of Yakult and produced independently by Scientific American’s board of editors. Earlier this year I got an Oura ring to track the state of my health. Soon ...

Jillian Kubala, MS, is a registered dietitian based in Westhampton, NY. Jillian uses a unique and personalized approach to help her clients achieve optimal wellness through nutrition and lifestyle ...

Understanding your heart rate is crucial for more than just reaching optimal fitness–it can also help to reduce injury and ...