Hallucinogens like DMT, psilocin, and LSD might rewrite the rules of sleep, blurring the line between dreams and reality.

HOUSTON — A good night’s sleep is important for both the body and brain. It’s essential to understand the four stages of ...

People on TikTok and other social media say they feel more alert when they have had fewer hours of sleep—but sleep scientists ...

From a tiny sample of tissue no larger than a grain of sand, scientists have come within reach of a goal once thought ...