Knowledge Center

Others may misjudge you because of your droopy eyelids, hangdog expression

Every face tells a story, and when you’ve had too little sleep the world sees it in technicolor, a new study suggests. What’s more, those red, puffy eyes and sagging eyelids likely influence what people think of you, the researchers say.

So, the next time you’re tempted to pull an all-nighter, consider that “other people might treat you differently because of the way you look when you haven’t slept,” said lead ...

In our culture, we tend to value the ability to function on few hours of sleep. But not getting enough sleep can lead to health problems and even shorten your life.

There are an endless number of pursuits that make us want to push our bedtime later and later, from work to Facebook to our favorite TV shows. Making a habit of skimping on sleep can have a huge impact on health and even lead to a shorter life.

Studies have consistently ...

What makes someone a light sleeper, and how you can enjoy a deeper, heavier sleep? You’ll rest easy after learning these simple tips.

For some people, the slightest noise awakens them at night. For others, the wailing siren of a passing fire truck doesn’t disturb their slumber. Just why, though, remains a bit of a mystery.

Although many people are self-proclaimed light sleepers or heavy sleepers, researchers have found that little is actually known about why people react differently to noises and ...