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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. During sleep, there is a marked decrease in muscle activity …

  2. Brain Basics: Understanding Sleep - National Institute of …

    Feb 25, 2025 · Sleep is an important part of your daily routine—you spend about one-third of your time doing it. Quality sleep—and getting enough of it at the right times—is as essential to …

  3. Benefits of Sleep: Improved Energy, Mood, and Brain Health

    Jul 22, 2025 · Getting enough quality sleep is essential for both mental and physical health. Key benefits of sleep include: Like eating well, staying hydrated, and exercising regularly, getting …

  4. What happens during sleep — and how to improve it

    Jun 1, 2025 · Sleep impacts nearly every part of your health, from brain function to immune strength. Learn what happens in each phase of sleep, how to manage common disruptions, …

  5. The Science of Sleep: Understanding What Happens When You …

    Sleep accounts for one-quarter to one-third of the human lifespan. But what exactly happens when you sleep? Before the 1950s, most people believed sleep was a passive activity during …

  6. Sleep tips: 6 steps to better sleep - Mayo Clinic

    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 — …

  7. Why Sleeping on a Consistent Schedule Is Important For Health

    6 days ago · Working this overlooked practice into your sleep routine could have real benefits for your health.

  8. Sleep | Sleep | CDC

    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 …

  9. Healthy Sleep - MedlinePlus

    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 …

  10. Sleep - American Heart Association

    Getting a good night’s sleep every night is vital to cardiovascular health. Adults should aim for an average of 7-9 hours, and babies and kids need more depending on their age. Too little or too …