The results were revealing. People who identified as early birds had brain features that were different from those of night ...

We all have nights when we stay up later than we should. But if you’re a night owl by nature, it might be doing more harm to ...

Dr. Nancy Foldvary explained that night owls often don’t get the rest they need because they go to bed too late. Over time, ...

There are night owls and morning larks, writes columnist Colleen Steele, referring to people's sleep habits. So which bird are you?