(CNN) — Find yourself yawning a lot? Do you need that third or fourth cup of coffee to make it through the afternoon at work? Such signs of sleepiness may be a red flag of a serious sleep deficit that ...

Sure, sleep is important, but sometimes TikTok, caffeine, and the most recent season of You take priority. At least at night. By the time your alarm goes off in the morning, there’s nothing you crave ...

Feeling groggy these days? NPR's Life Kit has science-based strategies to help you sleep better, deeper and longer. A full night's sleep is a wonderful thing. It improves our memory and brain ...

Many athletes and professional musicians swear by getting some shut-eye during the day, but what’s the best way to ensure you don’t end up feeling groggy?