These days, it may seem like there’s a million different data points that you’re supposed to keep track of—hello, steps, ...

Scientists have a lot to learn about the connection between sleep and stress, but one thing is clear: They're both trending in the wrong direction. As revealed in a recent Gallup poll, the proportion ...

Smartwatches and wearable heart monitors can help detect issues such as irregular heart rhythms. But they also have limits ...

Baseline heart rate variability is a critical predictor of response to transcutaneous auricular vagus nerve stimulation, ...

Most fitness trackers offer a wealth of heart-rate data. Here’s how to make sense of it. By Talya Minsberg If you wear a smartwatch or fitness tracker, you likely already have access to a steady ...