Building a real-life version of the Star Trek tricorder has been the goal of engineers and hackers alike since the first time Dr McCoy complained about being asked to work outside of his job ...

How fast does your heart beat? It’s a tough question to answer, because our heart rate changes all the time depending on what we’re doing and how our body is behaving. However, [Ludwin] noted that ...

This year, more heart rate monitors have made their way into fitness trackers than ever before. All the major companies—Fitbit, Garmin, and Polar, among many others—have made heart rate monitoring ...