The CDC reports that heart disease is the leading cause of death for men, women and people of most racial and ethnic groups in the US. That's why it's essential to make sure your heart is healthy.

A racing heart is usually a sign of agitation or excitement. But if it's not unusual for your heart to beat too fast or to skip a beat, it might be worth having it checked out by a doctor. In order to ...

From Apple Watches to Fitbits to treadmills, there are more ways than ever for people to keep up with their vitals. So why does so much fitness tech check your pulse? Because your resting heart rate ...

Your pulse is like having a direct line to your heart’s control room, constantly broadcasting information about your cardiovascular health that most people never bother to decode. While everyone knows ...

If you’re waking up tired even after seven or eight hours of sleep, your heart rate may be falling too far during the night.

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 ...

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...