keywords:
description:SleepFoundation.org is the leading source for evidence-based, medically reviewed sleep health information and in-depth product testing.
Sleep TopicsHealthy Sleep TipsSleep HygieneSleep DeprivationBedroom EnvironmentHow Sleep WorksCircadian RhythmMental HealthWomenBaby SleepChildren and SleepAging and SleepRecommended Sleep TimesStages of SleepSnoringDreamsCOVID-19 and SleepNappingPhysical HealthPhysical ActivityNutritionPregnancyAllergiesCPAPTravelDrowsy DrivingAnimalsSleep DisordersInsomniaSleep ApneaNarcolepsyRestless Leg Syndrome (RLS)ParasomniasREM Sleep Behavior DisorderNon-24-Hour Sleep Wake DisordersShift Work DisorderExcessive SleepinessHypersomniaSleep-Related Movement Disorders Periodic Limb Movement DisorderBruxismSleep-Related Breathing DisordersSleep SolutionsFind the Best MattressFor Side SleepersFor Stomach SleepersFor Back PainMemory Foam MattressFor Heavy PeopleBudget MattressMattress in a BoxCooling MattressesHybrid MattressFirm MattressesSoft MattressBest Online MattressMattress SizesMattress ReviewsNectarCasperPurpleDreamcloudLeesaTuft and NeedleSaatvaBearPuffyHelixWinkbedPurple HybridMattress ComparisonsCasper vs LeesaCasper vs NectarCasper vs PurpleCasper vs Tuft and NeedleLeesa vs Tuft and NeedlePurple vs Tuft and NeedlePurple vs TempurpedicTempurpedic vs Sleep NumberMattress SalesLabor Day Mattress Sales 2021Find the Best BeddingPillowsSheetsWeighted BlanketsBest Mattress ToppersSheet ReviewsWeighted Blanket ReviewsAdjustable BedsAnti-Snoring Mouthpieces and MouthguardsCPAP Machine ReviewsSleep MedicationsMelatonin and SleepThe State of Sleep: An Analysis of the Best and Worst Cities for Sleep in the U.S.Written bySarah Shoen|October 26, 2021Sleep Guidelines During the COVID-19 PandemicMedically Reviewed byDr. Anis Rehman|April 7, 2021Dream On: A New Theory on Why Strange Dreams May Help UsWritten byOlivia Murillo|November 8, 2021COVID-19 Vaccine: Sleep, Sickness, and ImmunityMedically Reviewed byDr. Abhinav Singh|November 3, 2021Remote Work and Lockdown Showing Long-Term Impact On SleepWritten bySarah Shoen|October 29, 2021Study Shows How Body Composition Affects Athletes’ SleepWritten bySarah Shoen|October 20, 2021Migraines Impact Sleep Quality and REM Sleep, Study FindsWritten bySarah Shoen|October 18, 202125-Year Follow-Up Study Reveals Link Between Sleep in Midlife and Dementia DiagnosesWritten byOlivia Murillo|October 11, 2021The Relationship Among Sleep, Socioeconomic Status, and the ClassroomWritten bySarah Shoen|August 31, 2021A Year of Transition and Adjustment: Teachers and Families Prepare for School in the COVID EraWritten bySarah Shoen|August 31, 2021Looking for Something Specific? Latest Articles Sleep NewsDream On: A New Theory on Why Strange Dreams May Help UsWritten byOlivia Murillo
Neuroscientists suggest a new theory of the purpose of strange dreams and calls it the overfitted brain hypothesis.
Written byOlivia Murillo
Neuroscientists suggest a new theory of the purpose of strange dreams and calls it the overfitted brain hypothesis.
The transition in and out of daylight saving time can affect your sleep cycle and overall health. We cover DST
Medically Reviewed byDr. Anis Rehman
The transition in and out of daylight saving time can affect your sleep cycle and overall health. We cover DST
Circadian RhythmHow to Prepare for the Start and End of Daylight Saving TimeWritten byEric Suni
The start and end of daylight saving time can affect circadian rhythm and disrupt your sleep cycle. Learn how to
Written byEric Suni
The start and end of daylight saving time can affect circadian rhythm and disrupt your sleep cycle. Learn how to
Sleep ApneaSleep Apnea Test At HomeWritten byAustin Meadows
An at-home sleep apnea test may be a convenient choice for those who cannot easily access a sleep lab. Learn
Written byAustin Meadows
An at-home sleep apnea test may be a convenient choice for those who cannot easily access a sleep lab. Learn
Sleep StudyMultiple Sleep Latency Test MSLTWritten byJay Summer
The Multiple Sleep Latency Test (MSLT) is designed to identify excessive daytime sleepiness, a symptom of certain sleep disorders. Learn
Written byJay Summer
The Multiple Sleep Latency Test (MSLT) is designed to identify excessive daytime sleepiness, a symptom of certain sleep disorders. Learn
How Sleep WorksSleep DisordersSleep HealthSleep Tools TipsWhat’s the Connection Between Race and Sleep Disorders?Medically Reviewed byDr. Abhinav Singh
The burden of sleeping problems falls more heavily on people of color. Our guide explores racial disparities in sleep and
Medically Reviewed byDr. Abhinav Singh
The burden of sleeping problems falls more heavily on people of color. Our guide explores racial disparities in sleep and
WomenHealthy Sleep Tips For WomenMedically Reviewed by:Dr. Heather Wright
Insomnia in women is very common. Learn about sleep tips women can use to enjoy a better night’s sleep.
Medically Reviewed by:Dr. Heather Wright
Insomnia in women is very common. Learn about sleep tips women can use to enjoy a better night’s sleep.
COVID-19 and SleepCOVID-19 Vaccine: Sleep, Sickness, and ImmunityMedically Reviewed byDr. Abhinav Singh
Looking for the facts about COVID-19 vaccines? Learn about COVID-19 vaccine availability, safety, effectiveness, and how sleep plays a part
Medically Reviewed byDr. Abhinav Singh
Looking for the facts about COVID-19 vaccines? Learn about COVID-19 vaccine availability, safety, effectiveness, and how sleep plays a part
The pace of your breathing can be a window into your health, so it’s worth learning more about your respiratory
Medically Reviewed by:Dr. Abhinav Singh
The pace of your breathing can be a window into your health, so it’s worth learning more about your respiratory
BabiesHow Does Being a New Parent Affect Sleep?Medically Reviewed by:Rebecca Robbins, PhD
New parents commonly experience sleep deprivation. Learn strategies for sleeping more, how to create an optimal environment for sleep, and
Medically Reviewed by:Rebecca Robbins, PhD
New parents commonly experience sleep deprivation. Learn strategies for sleeping more, how to create an optimal environment for sleep, and
Sleep SolutionsBest Mattress of 2021Best Sheets of 2021Best Weighted Blankets of 2021Best Adjustable Beds of 2021 Featured TopicsHow Sleep WorksSleep HygieneMental Health and SleepPhysical Health and SleepNutrition and SleepAging and SleepBabies and SleepChildren and SleepTeens and SleepCircadian RhythmSnoringBedroom EnvironmentTravel and SleepSee All Sleep Topics Common Sleep DisordersInsomniaInsomnia is a sleep disorder where you have trouble falling or staying asleep. Insomnia may be short-lived (acute), or long-lasting (chronic).Sleep ApneaMarked by abnormal breathing at night, sleep apnea is one of the most common sleep disorders, affecting adults and children alike.NarcolepsyFalling asleep during the day despite eight hours of sleep? Narcolepsy, a sleep disorder, may be to blameShift Work DisorderMany people have jobs that require them to work when they may otherwise be sleeping, resulting in poor sleep hygiene.Excessive SleepinessPeople struggling with excessive sleepiness feel sluggish and groggy throughout the day, which can lead to accidents and long-term health effects. Our commitment to helping you get a better night’s sleep
We work hard to bring you the most accurate and up-to-date information about different sleep health topics. Rest assured every Sleep Foundation guide is carefully vetted and fact-checked prior to publication.
Read our Editorial Policy
Our writers and editors exclusively use reputable, data-driven sources such as peer-reviewed journals, government reports, and articles from established medical associations.Members of our medical experts team perform a final review of every article and guide to ensure the information is accurate and consistent with current standards and practices.From mattresses and pillows to white noise machines, our comprehensive product reviews include detailed construction specs, side-by-side comparisons, and detailed ratings based on in-house testing, product reviews and secret-shopping. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies. However you may visit Cookie Settings to provide a controlled consent.Cookie settingsACCEPTPrivacy border: 1px solid #e6eff4;color : #4559ce;} .helpful-block-content ul li a.wth-green-btn{background: #e6eff4;border: 1px solid #4559ce;color : #4559ce;} .helpful-block-content ul li a.wth-red-btn{background: #e6eff4;border: 1px solid #4559ce;color : #4559ce;} .helpful-block-content ul li a.wth-green-btn:hover{background:#4559ce;color:#e6eff4;} .helpful-block-content ul li a.wth-red-btn:hover {background:#4559ce;color:#e6eff4;}