Your sleep data is screaming long before you feel exhausted, and three red flag metrics consistently predict trouble. I focus ...

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 ...

The first time I used the sleep score feature on an Apple Watch was after setting-up the new Series 11 about a month ago. With the rigour of a heavy news cycle, my sleep cycle was completely awry—for ...

Apple added a new Sleep Score feature that gives you a single number to sum up how you slept. It pulls data from your Apple Watch and turns it into an easy rating you can check first thing in the ...