It's not unusual to see researchers and DIYers find new uses for the Raspberry Pi, but the potential in this latest discovery is a doozy. A research team created a method for detecting heart rates ...

Heart rate is one of the most valuable physiological metrics for runners because it provides objective real-time insight into how hard your body is working. Unlike pace or distance, which are external ...

Your heart beats around 100,000 times every day. Heart rate is a key marker of cardiovascular activity and an important vital sign. But your pulse is not as steady as a precision clock – nor would you ...