This simple circuit enables you to listen to your heartbeat, for instance, while you are exercising. The transducer used for detecting the pulse is an electret microphone, X1 in the diagram. The model ...

The best heart rate monitors will help you train efficiently and keep track of your fitness. A heart rate monitor will record and/or transmit your pulse rate in beats per minute. Heart rate monitors ...

Add Yahoo as a preferred source to see more of our stories on Google. Using a chest strap heart rate monitor can give you accurate, actionable insights to help improve your running. What is the best ...

We may receive a commission on purchases made from links. When smartwatches and other wearables first hit the market, some people were skeptical that they'd be anything more than a novelty. Once users ...

Using a chest strap heart rate monitor can give you accurate, actionable insights to help improve your running. What is the best chest strap heart-rate monitor overall? The best chest strap heart-rate ...

Jake Peterson is Lifehacker’s Tech Editor, and has been covering tech news and how-tos for nearly a decade. His team covers all things technology, including AI, smartphones, computers, game consoles, ...

University of Washington researchers built a smartphone app that tracks fetal heart rate as accurately as clinic tools using only the phone's speaker and mic, though it's not ready for release yet.