Jul 10, 2025 · Why Getting Enough Sleep Is Important Sleep is an essential function that allows your body and mind to recharge, leaving you refreshed and alert when you wake up. Healthy sleep also …

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.

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.

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. Getting …

Jul 27, 2025 · Sleep is composed of two major types: non-REM (NREM) sleep and REM (rapid eye movement) sleep. Each plays a unique role, and both are critical for mental and physical health.

Nov 5, 2025 · Sleep gives the body time to heal and supports healthy growth. During sleep, hormone levels change and muscles relax, allowing tissues to heal and the body to build muscle and …

Jul 18, 2025 · Oxford researchers find the answer may lie in mitochondria. New study uncovers how a metabolic “overload” in specialised brain cells triggers the need to sleep. Sleep may not just be rest …

May 29, 2025 · Sleep enables the brain to perform essential repairs and maintenance tasks, building connections between cells that optimize the brain's performance when awake. Dreaming during …

Cognitive Function of Sleep Another theory regarding why we sleep involves sleep’s importance for cognitive function and memory formation (Rattenborg et al., 2007). Indeed, we know sleep …

What exactly does sleep do for your body and mind? Here’s what researchers know about the science of sleep—including the stages of sleep, your biological clock, health connections and more.