I tested Google's Fitbit Air against the Whoop 5.0 to see which screen-free tracker delivers better value, comfort, and health insights for everyday users.

When it comes to exercising, your heart rate is the gold-standard metric to uncover how hard you're pushing. It tells you whether you're working aerobically or anaerobically, how your body is reacting ...

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 ...

Apple’s Beats unit rolled out the long-anticipated Powerbeats Pro 2, bringing noise cancellation, a heart-rate monitor and revamped design to the popular, athlete-oriented earbuds. The new model adds ...

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 ...