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

From left, Manuel Hernandez, Ayse Dogan and Richard Sowers watch as graduate student Laila Shaaban walks on a treadmill while a “smart shirt” tracks electrical activity in her heart. In the background ...

Understanding your heart rate can be helpful to calibrate your perceived exertion, especially on easy and steady runs. This ...

Brazilian researchers reveal that even mild cases of COVID-19 can temporarily reduce heart rate variability, with stress on the autonomic nervous system lasting up to six months—especially in older ...

You might love the motivating tempo for workouts or the cadent call for calm that a smartwatch heart rate monitor provides. But when it’s time for an upgrade, what ...

You can also test the accuracy of your numbers out on the run, for example by running at what feels like a hard pace (using the ‘talk test’, you should only be able to get two or three words out at a ...