During sleep, there is a marked decrease in muscle activity and interactions with the surrounding environment. While sleep differs from wakefulness in terms of the ability to react to stimuli, it …

Dec 3, 2021 · When you sleep, your body rests, recovers and rebuilds itself through four stages. Here’s how much sleep you need to feel rested.

Jul 10, 2025 · Everyone needs sleep, but about one in three American adults don’t get enough of it. The consequences of sleep deprivation are serious, so it’s worth learning why 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 …

2 days ago · Getting enough quality sleep is essential to strong memory function. Understanding the sleep-memory connection may help you learn to prioritize sleep and improve your memory.

3 days ago · Understand the science of sleep, how brain cycles impact your health, and evidence-based ways to improve rest for better mind and body function.

Oct 31, 2025 · Since the discovery of electroencephalography to measure brain activity in 1924, sleep research has rapidly advanced. Contemporary sleep research no longer focuses on the …

Feb 25, 2025 · Lack of sleep makes it harder to concentrate and respond quickly. Sleep is important to a number of brain functions, including how nerve cells (neurons) communicate …

Oct 1, 2021 · Fifty years of research on brain activity and physiological patterns of sleeping has revealed a great deal about what sleep is and what it is not. We all have at least a vague …

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 …