You can do everything “right” and still stare at the ceiling at 2:17 a.m. When your brain keeps scanning for problems, bedtime stops feeling like recovery and starts feeling like a test you’re failing ...

Your brain is not one integrated system. Conscious thoughts, the words that go through your head, occur primarily in your cortex, which is the outer six layers of brain cells. It also processes the ...

You've probably experienced it—your alarm is set for 6:30 a.m., yet somehow your eyes snap open a few minutes before it goes off. There's no sound, no external cue, just the body somehow knowing it's ...