It may seem innocent, but it's probably getting in the way of good rest.

HOUSTON — A good night’s sleep is important for both the body and brain. It’s essential to understand the four stages of sleep and how to get more restful z’s. Stage 1: Transitional sleep The sleep ...

The locus coeruleus is a region of the brain that is instrumental in coordinating our mental processing and is the primary source of noradrenaline in the brain, which acts to regulate arousal states ...

On World Sleep Day 2026, experts explain how much sleep adults really need, why sleep quality matters for health, and tips to improve restful, restorative sleep.