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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 and …

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

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

  3. 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, and simple ways …

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

    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 survival as food …

  5. What Happens When You Sleep? - Sleep Foundation

    Jul 10, 2025 · When you sleep, your body undergoes a series of changes that enable the rest that is vital to your overall health. Sleep allows the brain and body to slow down and engage in processes of …

  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 — from work stress …

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

    Jun 19, 2023 · You spend about one-third of your life sleeping, but it’s still something many struggle with. Researchers and experts also struggle with it because of the mysteries surrounding how and why we …

  8. About Sleep | Sleep | CDC

    May 15, 2024 · About Sleep Key points Good sleep is essential for our health and emotional well-being. Getting enough sleep and good sleep quality are essential for healthy sleep. The amount of sleep …

  9. The Science of Sleep: Understanding What Happens When You Sleep

    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 which the body …

  10. Best and Worst Sleeping Positions for Health, According to Experts

    Dec 29, 2025 · Certain sleeping positions, such as side sleeping, may be beneficial for your health. Experts suggest that sleeping on your stomach or back may have various health implications.