Nightmares can affect anyone, and when frequent, can harm sleep and daily life. Learn about nightmares, their causes, & how to reduce them.| 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
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
Obstructive sleep apnea is a condition marked by abnormal nighttime breathing. Learn more about the symptoms, causes, and treatments of obstructive sleep apnea.| Sleep Foundation
Sleep and mental health are deeply intertwined. Learn about the complex relationship between sleep and mental health problems and how to improve both.| Sleep Foundation