Sleep is a state of reduced mental and physical activity in which consciousness is altered and certain sensory activity is inhibited. During sleep, there is a marked decrease in muscle activity and …

Sleep is a body process that allows your body to rest, repair and restore itself. You need sleep to function properly. Lack of sleep has links to many health issues.

May 15, 2024 · Quality sleep means you are getting uninterrupted and refreshing sleep. Getting quality sleep is not just about how many hours you sleep, but how well you sleep.

2 days ago · Sleep is more than "lights out" time. Learn what happens when you sleep and why sleep is important for your mental and physical health.

Discover expert sleep medicine at Penn Medicine for personalized treatments addressing sleep disorders like apnea, insomnia, and more.

The 40th annual meeting of the Associated Professional Sleep Societies (APSS) brings together the world’s leading experts offering unparalleled opportunities for knowledge sharing, networking, and …

Feb 25, 2025 · Sleep is a complex and dynamic process that affects how you function in ways scientists are now beginning to understand. This webpage describes how your need for sleep is regulated and …

We seek out the latest scientific insights about sleep and turn our findings into simple-to-understand resources that help people get enough of the healthy, restorative sleep they need.

Jan 31, 2025 · Consider simple tips for better sleep, from setting a sleep schedule to including physical activity in your daily routine. Many factors can interfere with a good night's sleep — from work stress …

Dec 9, 2025 · Sleep is a natural process that helps your body restore energy, supports learning and memory, and keeps you healthy. During sleep, your brain cycles through different stages of non …