Hosted on MSN

Here's What 'Core Sleep' Means On Your Apple Watch—and Why It Matters

It’s not exactly news that sleep is an important part of health. It’s also not exactly news that many of us struggle to get enough. Whether it’s because of a busy schedule, insomnia or feeling ...
Phys.org

Earth's inner core: Nobody knows exactly what it's made of, but now we've started to uncover the truth

The iron-rich core at the center of our planet has been a crucial part of Earth's evolution. The core not only powers the magnetic field which shields our atmosphere and oceans from solar radiation, ...
CNN

Earth’s core has slowed so much it’s moving backward, scientists confirm. Here’s what it could mean

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Deep inside Earth ...
The Conversation

What’s the difference between abs and core? One term focuses on aesthetics – and the other on function

You’ve probably heard the terms “abs” and “core” used in social media videos, Pilates classes, or even by physiotherapists. Given they seem to refer to the same general area of your body, you might ...
Hosted on MSN

Here's What 'Core Sleep' Really Means, According to Your Apple Watch

Let's talk about one of the most confusing terms you’ll see on your fitness tracker—specifically your Apple Watch. Next to REM sleep, which you’ve probably heard of, and “deep” sleep, which feels self ...
The Conversation

Earth’s inner core: nobody knows exactly what it’s made of – now we’ve started to uncover the truth

The iron-rich core at the centre of our planet has been a crucial part of Earth’s evolution. The core not only powers the magnetic field which shields our atmosphere and oceans from solar radiation, ...