New research suggests caffeine drinkers "may have difficulty accurately perceiving the influence of caffeine on sleep quality" Brenton Blanchet is an Associate Editor on PEOPLE's TV team. He has been ...

What is a sleep study? A sleep study, also known as a polysomnogram, is a diagnostic test that monitors various body functions while a person is asleep. It is most commonly used to diagnose sleep ...

In 1959, New York DJ Peter Tripp became a test subject for sleep’s effects. His 201-hour wakeathon made him see spiders in his shoes and question his identity. This shows why sleep is essential, not ...

Can what you eat affect the way you sleep or the types of dreams you have? A recent study asked just that. In the study, published Monday in the journal Frontiers in Psychology, 40.2% of participants ...

Insufficient sleep is one of the strongest predictors of shorter life expectancy in the U.S., surpassed only by smoking. That's according to a new nationwide analysis published in the journal SLEEP ...

Columnist Ben Hofmeister has just completed his third overnight sleep study in three years as part of an effort to control sleep apnea.