Knowing your maximum heart rate can be useful when planning exercise. Workouts in lower “zones”, defined as up to 70% of maximum heart rate, improve aerobic capacity. More intense exercise trains ...

Researchers explore interpersonal physiological synchrony—the alignment of heart rates and brain activity—as the biological basis for human empathy.

How people connect with one another may be more complex—and more fascinating—than previously thought. A new review in Nature Reviews Psychology explores the emerging science of interpersonal ...

Wearable fitness trackers provide sleep data that can give you insights about the duration and quality of your sleep. A doctor explains which metrics matter the most, and how to use the data to ...