When a transmitter sends a Wi-Fi signal and a receiver captures it after it passes through a person, the signal’s changes can ...

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 ...

Apple's latest research reveals how models made for speech recognition can determine your heart rate by processing phonocardiograms, which could be used in AirPods. On Thursday, a week after the ...