Sleep Sleeping Girl, Domenico Fetti, c. 1615 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 …

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

What is sleep? Sleep is a normal body process that allows your body and brain to rest. At first glance, sleep is deceptively simple. For most people, it’s just a matter of getting comfortable, closing your …

May 15, 2024 · For Everyone 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. …

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 …

Jan 31, 2025 · Sleep tips: 6 steps to better sleep You're not doomed to toss and turn every night. Consider simple tips for better sleep, from setting a sleep schedule to including physical activity in …

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 …

The National Sleep Foundation (NSF) is dedicated to improving public health and well-being through sleep education and advocacy.

Dec 9, 2025 · Sleep is a natural process that helps your body restore energy, supports learning and memory, and keeps you healthy. You can take steps to improve your sleep habits.

Apr 29, 2026 · Sleep is a natural state in which the body and brain become less active and responsive, allowing essential processes like physical repair, memory consolidation, and energy restoration to …