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 …

Jun 19, 2023 · 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.

Jun 11, 2026 · Sleep is more than "lights out" time. Learn what happens when you sleep and why sleep is important for your mental and physical health.

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.

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 …

Many people have problems with sleep at some point. Making small changes to habits and routines that help you sleep can make a real difference. This is sometimes called sleep hygiene. This page brings …

We specialize in diagnosing and treating a wide variety of sleep problems. We combine the experience and the expertise of our team with the latest sleep technology and equipment.

Jul 25, 2025 · There are four phases of sleep, including one for rapid eye movement (REM) sleep and three that form non-REM (NREM) sleep. These stages are determined based on an analysis of brain …

List of non-CDC websites to find more information about sleep and sleep health. By sharing information and resources, CDC raises awareness about the importance of sleep health and its effect on public …

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 …