2.5 billion. No, it's not how old the Earth is. It's the average amount of times the heart beats in a lifetime, according to the American Heart Association. A quick review on this important organ: The ...

It may sound dramatic, but the rate at which your heart is beating plays a key role in how long you’re likely to live. According to expert cardiologists and academic researchers, resting heart rate ...

You track your VO2 max and working heart rate, but this underrated biometric may tell you more about your heart and long-term ...

You’re familiar with the feeling of your heart pounding in your chest, your blood pulsing through your veins with increasing frequency when you’re scared, stressed, or sweating it out at the gym.

For athletes and fitness enthusiasts, it is important to understand what a good resting heart rate is. This can give you an idea of how fit you are. For athletes and fitness enthusiasts, it is ...

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 ...

If you’ve ever bolted awake from a nightmare with your heart beating like a frenzied drum, you already know that sleep and rest are not the same. Which is why it should make sense that neither are ...

The ubiquity of activity trackers means access to health data we previously never thought about, such as the number of steps we take, the hours we sleep, and our real-time heart rate. When it comes to ...