Visit the pages below to learn about different types of sleep disorders and their symptoms, how they're diagnosed and treated, and more.| Sleep Foundation
Over the past decade, we've tested more than 2,000 mattresses in our Seattle-based lab. Find out which ones fared the best and discover your perfect mattress.| 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
Cognitive behavioral therapy for insomnia (CBT-I) is a first-line treatment of chronic insomnia. Learn more about CBT-I in our guide.| Sleep Foundation
Sleep apnea involves disrupted breathing during sleep. Learn about the types of sleep apnea as well as potential symptoms, causes, diagnosis, and treatment.| 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
Sleep deprivation can come with steep consequences, including an increased risk of car crashes, heart problems, reduced immune function, and a lower quality of life. Learn how to spot the symptoms.| Sleep Foundation
Looking for ways to sleep better? Improving sleep hygiene can make your habits, routines, & environment more conducive to consistent and restorative sleep.| Sleep Foundation