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- 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 interactions with the surrounding environment
- Sleep: How Much You Need and Its 4 Stages - Cleveland Clinic Health . . .
When you sleep, your body rests, recovers and rebuilds itself through four stages Here’s how much sleep you need to feel rested
- Sleep tips: 6 steps to better sleep - Mayo Clinic
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 and family responsibilities to illnesses It's no wonder that quality sleep is sometimes elusive
- About Sleep | Sleep | CDC
Quality sleep means you are getting uninterrupted and refreshing sleep Getting quality sleep is not just about how many hours you sleep, but how well you sleep
- How sleep deprivation can harm your health - Harvard Health
Sleep deprivation doesn't just make you tired — it can raise blood pressure, disrupt hormones, impair mental health, and weaken your immune system Learn the risks and symptoms of not getting enough sleep
- The Science of Sleep: Understanding What Happens When You 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
- Science of Sleep: What is Sleep? | Sleep Medicine
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 notion of what sleep is, but that doesn't mean that defining this mysterious part of our lives is simple
- The 4 Stages of Sleep: What Happens During Each Cycle
As we sleep, our brain moves through four stages and two phases: non-rapid eye movement (NREM) and rapid eye movement (REM) The brain has four stages within the NREM phase Each stage and phase of sleep plays an important role in our overall health
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