Add Yahoo as a preferred source to see more of our stories on Google. Here's What 'Core Sleep' Really Means, According to Your Apple Watch - Beth Skwarecki Let's talk about one of the most confusing ...

If you use an Apple Watch to track your sleep, there's one stage of sleep that you might be confused by — core sleep. What exactly is it and how much do you need? The Apple Watch 10 offers up in-depth ...

Apple has never been shy about inventing its own vocabulary for technical terms, and some of the tracking metrics on the Apple Watch are no exception. Case in point: core sleep. It's a term Apple uses ...

Here's What 'Core Sleep' Means On Your Apple Watch—and Why It Matters originally appeared on Parade. It’s not exactly news that sleep is an important part of health. It’s also not exactly news that ...