Two sleep doctors explain what deep sleep is, how much we need and the real number you should be looking for on your Apple Watch sleep tracker.

I’ve used many of the best smartwatches, but when it comes to sleep, few companies offer the same Sleep detail and insight that Samsung does. Sleep has been core to the Samsung Health strategy since ...

What is core sleep is on your Apple Watch, and does it even matter? We look at which sleep stages matter most for quality rest and recovery.

We all have days where we wake up after clocking the usual sleep hours, but still feel fatigued and wonder if there was something wrong during the rest hours. For such situations, the sleep tracking ...

Already multitool smart devices, Apple Watches added another buzzworthy feature last month: an app to detect sleep apnea. Sleep apnea is a condition that causes a sleeper’s breathing to pause when the ...

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 ...

Celebrating Sleep Week, BGR has compiled a list of ways to track your sleep using your iPhone, iPad, and Apple Watch. Last year, we shared six ways Siri can help improve your sleep quality, which are ...