REM sleep is known for dreaming, but much more happens during this critical sleep stage. Learn what REM sleep involves and how much REM sleep you need.| Sleep Foundation
Deep sleep gives your body a chance to repair and recover and leaves you refreshed in the morning. Learn how much deep sleep you need and how to get more.| Sleep Foundation
Dreams are an integral part of sleep. Learn about when we dream, the types of dreams, and the competing theories for why we dream in the first place.| Sleep Foundation
Excessive daytime sleepiness can have serious effects on health and quality of life. Learn the causes and how to treat them.| Sleep Foundation
Understanding the link between sleep and depression can help improve your sleep quality and better manage your mental health.| Sleep Foundation
Healthy sleep consists of distinct stages. We break down the defining traits of each stage and how they differ from one another.| Sleep Foundation
Insomnia is a sleep disorder that affects many people. Learn about symptoms, causes, and treatments.| Sleep Foundation
Our editorial policy is the driving force of our high standard for quality. Learn about the methods we employ to produce accurate, unbiased content| Sleep Foundation
Want to learn how to create a bedroom environment for good sleep? Our guide includes room temperature, bedding options, sound-proofing tips, & more.| Sleep Foundation
Anxiety is frequently connected to sleeping problems. Excess worry and fear make it harder to fall asleep and stay asleep through the night.| Sleep Foundation
Circadian rhythms are natural, 24-hour patterns that play a vital role in the sleep-wake cycle. Learn more about how they work and how to keep them aligned.| Sleep Foundation