We’ve all got that one friend who encourages us to “smile” when that’s the last thing we want to do. But prepared to get even more annoyed because … your friend is right. When researchers from the University of Tennessee Knoxville and Texas A&M pored over nearly 50 years of data—accumulated from 138 studies—they found that there is in fact...

Along with the surge in smartphone usage, we’re in the midst of a 50-year decline in the amount of sleep people are logging each night. It’s easy to see the connection when you consider that most of us sleep either with our smartphone in bed, or right next to us.

The nighttime activities you choose should focus on two things: relaxing, reducing any anxiety from your day, and creating a space that induces sleepiness. Read more for ideas on how to get the best night's sleep.

If you live in the northern latitudes, take heart: Spring will be here in less than a month. Even so, it’s still very possible to be suffering from seasonal affective disorder—and its less-serious sibling, known as “the winter blues”—through February and March. If the cold and dark have you feeling depressed, fatigued, socially isolated, brain-fogged or lethargic, there are some...