While sleep differs from wakefulness in terms of the ability to react to stimuli, it still involves active brain patterns, making it more reactive than a coma or disorders of consciousness Sleep affects almost every type of tissue and system in the body—from the brain, heart, and lungs to metabolism, immune function, mood, and disease resistance. Consider simple tips for better sleep, from setting a sleep schedule to including physical activity in your daily routine
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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.
Getting enough sleep and good sleep quality are essential for healthy sleep The amount of sleep you need changes as you age Talk to your healthcare provider if you have problems sleeping. Throughout your time asleep, your brain will cycle repeatedly through two different types of sleep
The first stage comes between being awake and falling asleep. Sleep is a complex biological process made up of several stages that cycle throughout the night Researchers and experts also struggle with it because of the mysteries surrounding how and why we sleep and what happens to us while we do. 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, and simple ways to improve sleep hygiene
What is sleep, and why is it important?
