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 …

Jul 22, 2025 · Sleep is a complex biological process made up of several stages that cycle throughout the night. These stages include rapid eye movement (REM) sleep and non-REM …

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 — …

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 …

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, …

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 …

Throughout your time asleep, your brain will cycle repeatedly through two different types of sleep: REM (rapid-eye movement) sleep and non-REM sleep. The first part of the cycle is non-REM …

Aug 9, 2024 · So, it’s no surprise that we spend about one-third of our lives sleeping. Let’s take a closer look at why we sleep, along with what happens when we don’t get enough.

6 days ago · Struggling to fall or stay asleep? Learn about insomnia, its common symptoms, risk factors, and effective treatments—including lifestyle tips and cognitive behavioral therapy—to …

Mar 24, 2022 · During sleep, your body is working to support healthy brain function and maintain your physical health. In children and teens, sleep also helps support growth and development. …