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 a lifelong powerlifter or bodybuilder, there's a good chance you're more concerned about growing your glutes, carving your core, or building your biceps than boosting your VO2 max. But for ...

Heart rate is one of the most powerful—and underestimated—indicators of your cardiovascular health. Understanding how it ...

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 ...

“At a cardiac arrest, the first procedure is to take your own pulse first.” —The House of God by Samuel Shem That famous line told to med students is both obvious and true. It’s a reminder that in ...

Running in zone 2, by definition, should feel easy. And that’s a good thing, considering zone 2 runs make up the majority of any good training plan. These easy efforts serve as the building blocks for ...

Heart rate zones represent different percentages of your maximum heart rate. They can help guide the intensity and effectiveness of your workouts. The benefits of exercise are widespread and include ...

In TODAY.com's Expert Tip of the Day, a cardiologist explains why a lower resting heart rate can be a good sign of heart health and how to improve this vital sign. Resting heart rate — the number of ...

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 ...