Apple’s sleep charts can feel like a nightly report card, and “core sleep” often ends up in the spotlight. Yet the science behind wearables suggests that fixating on that one stage is a distraction ...

Learn how heart rate monitoring, sleep tracking, and vitals app work together for better wellness. Pixabay, hu_lexxi Apple Watch has transformed from a simple wearable device into a sophisticated ...

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

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 ...

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 ...

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 ...

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 ...