What is core sleep is on your Apple Watch, and does it even matter? We look at which sleep stages matter most for quality ...

According to the Centers for Disease Control and Prevention (CDC), adults should aim for at least seven hours of sleep each night. But specialists emphasize that sleep quality depends on how the brain ...

Sleep is often treated as downtime, a passive break between the real business of being awake. But a new study has revealed that sleep is active, essential biology, showing how the brain uses the night ...

Obstructive sleep apnea disrupts brain function in several ways, including low oxygen levels, interrupted sleep, and vascular risk. Several regions throughout the brain may shrink, and the ...

Sleep apnea is a serious condition, causing breathing to stop and start several times during sleep. The most common form of the condition is obstructive sleep apnea, where the throat narrows, blocking ...