Hitting the sheets after midnight can be harmful or harmless, depending on a few factors. Here's what to know, plus how to ...

Possibly — but it mostly depends on the quality of sleep you receive when you do go to bed late. Cuellar says that ... rhythm is the same, and you don’t have to shift it to fit what seems ...

Dr. Dylan Petkus explains why not getting enough sleep is such a health risk and how to determine your ideal bedtime. Getty Images Is the perfect night of sleep something that’s only in your dreams?