If your resting heart rate is abnormally high or low, it could signal risks that need the attention of a doctor, say heart ...

Your heart beats about 100,000 times in one day and about 35 million times in a year. During an average lifetime, the human heart will beat more than 2.5 billion times. Give a tennis ball a good ...

Bottom line: App readings should always be taken with a grain of salt, but if you're just looking for a high-level overview of your heart rate over time, it's hard to beat the convenience of ...