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 ...

Checking your heart rate is a great way to stay in tune with your body. Maybe you have a device that counts your heartbeats per minute for you (and many modern fitness trackers and smartwatches are ...

While some measures of physical fitness such as athletic ability and one's strength or stamina may be difficult to ascertain right away, others are more obvious. One's resting heart rate, for instance ...

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.

Even though I prefer not to train and coach by heart rate, I have found that using these numbers—specifically resting heart rate values—can be a great tool for assessing recovery and how the body is ...

The MAX30105 is an optical sensor capable of a great many things. It can sense particulate matter in the air, or pick up the blinking of an eye. Or, you can use it as a rudimentary way to measure your ...

Whether brought on by stress, physical activity, or an extra cup of joe in the morning, most of us have all felt our heart rate quicken at one time or another. However, a lower resting heart rate ...

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 ...