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  1. Sleep - Wikipedia

    Sleep is a state of reduced mental and physical activity in which consciousness is altered and certain sensory activity is inhibited. …

  2. Sleep: What It Is, Why It’s Important, Stages, REM & NREM

    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 …

  3. Why Is Sleep Important? Benefits of Healthy Sleep

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

  4. SLEEP | Oxford Academic

    Explore curated collections of influential articles on sleep and trauma exposure, narcolepsy, insomnia, and REM Sleep Behavior …

  5. About Sleep | Sleep | CDC

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

  6. Sleep | Psychology Today

    Sleep is the balm that soothes and restores after a long day. Sleep is largely driven by the body’s internal clock, which takes cues …

  7. Brain Basics: Understanding Sleep - National Institute of Neurological ...

    Feb 25, 2025 · Sleep is a complex and dynamic process that affects how you function in ways scientists are now beginning to …

  8. Sleep | Definition, Patterns, Deprivation, & Theories | Britannica

    2 days ago · Sleep usually requires the presence of relaxed skeletal muscles and the absence of the overt goal-directed behaviour of …

  9. Sleep | Sleep | CDC

    List of non-CDC websites to find more information about sleep and sleep health. By sharing information and resources, CDC raises …

  10. How Does Sleep Work? Understanding the Science of Sleep

    Jul 21, 2026 · Sleep is a complex and dynamic biological process that still isn’t fully understood. Learn what we do know about how …