Stress and sleep are closely related. Stress raises cortisol levels, delays sleep, reduces sleep quality, and may increase the likelihood of nightmares. A lack of sleep can also affect day-to-day ...

What if changes in a person's stress levels could be detected while they sleep using wearable devices? A new study find changes in perceived stress levels reflected in sleep data -- an important step ...

As a longtime journalist who has tested plenty of gadgets and gizmos, I’ve tried my fair share of watches, rings, trackers and apps promising to alter my health—and help reduce my stress and improve ...

Both at-home sleep tests and smartwatches gather data on your sleep. Here's how to decide which one is right for you. Taylor Leamey wrote about all things wellness for CNET, specializing in mental ...

New research reveals that neurons in the preoptic hypothalamus -- the region of the brain that regulates sleep and body temperature -- are rhythmically activated during non-rapid eye movement sleep ...

NOT SURE WHAT fitness tracker is right for you? You've come to the right place. We've been wearing and documenting fitness ...