N early half of all Americans and around 40% of Britons now use a smartwatch, smart ring, phone app or another similar device to track their sleep. Are these gadgets accurate—an ...

Eight hours of sleep used to be the norm, and all-nighters with only a few hours of rest were rare among teenagers. In recent years, however, there has been an alarming decline in sleep duration. It ...

Just as a single night of insomnia may leave you feeling groggy and cranky, solid slumber can help you feel rested and ready to take on the day. How well you sleep over time, however, can influence ...

Sleep apps promise better rest through data-driven insights, but new research reveals they may also heighten worry in some users. So who truly benefits? Study: Sleep in the age of technology: the use ...