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 ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. The Apple Watch has a ...

Stress and anxiety caused by hormone fluctuations means that waking up at 3 a.m. has been plaguing my sleep for months. In these moments of staring at the ceiling, heart pounding and thoughts racing, ...

Getting a good night's rest is critical to your wellbeing, but it isn't always easy to go to bed or sleep through the night. Life Kit's here to help you and your loved ones achieve optimal sleep.