Sleep A-Z

Everything You Need to Know For a Great Night's Sleep

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Everything You Need to Know For a Great Night’s Sleep

Our Sleep A-Z Portal — The World of Sleep, All in One Place

At Sleepopolis, we live, breathe, and yes, dream sleep. We’re all about helping you get the best sleep possible by giving you the info you need, from the basics of healthy sleep to the latest updates in sleep science.

Want to learn about sleep disorders? You’ve come to the right place. Looking for tips on getting your child to sleep? We’ve got that covered, too. We strive to put out the most accurate sleep content available, and we don’t just say that. Our network of top-notch Sleep Experts verify everything we write.

So, rest easy. Dive into our resources and find everything you need to know about the fascinating subject of sleep.

Sleep Basics

Learn how sleep works with our comprehensive guides

  • Circadian Rhythm — the Internal Biological Clock
    • Chronobiology — How the Biological Clock Works
    • Circadian Rhythm and Health
    • Can the Circadian Rhythm Be Changed?
  • Dreaming
    • Why Do We Dream?
    • Nightmares Explained
    • Lucid Dreaming
  • How Much Sleep Do You Need?
    • By Age
    • Environmental and Genetic Factors
  • Sleep Stages
    • What Are the Stages of Sleep?
    • N1
    • N2
    • N3
    • REM
  • What is Sleep?
    • Why We Sleep
    • Sleep and the Body
    • Sleep and the Brain

Sleep experts

Dr. Michael Grandner, Ph.D

Michael-Grandner Sleep A-Z

Clinical psychologist, Director of the Sleep and Health Research Program at the University of Arizona

Janet K. Kennedy, Ph.D

Janet Sleep A-Z

Clinical Psychologist, author of The Good Sleeper: The Essential Guide to Sleep for Your Baby (and You)

Dr. Whitney Roban, Ph.D

whitney Sleep A-Z

Clinical Psychologist, Author, and Family Sleep Specialist

Sleep Health

Sleep Health Resources

  • Sleep Calculator
  • Sleep and Aging
  • Sleep and Exercise
    • How Exercise Affects Sleep (and vice versa)
    • When to Exercise for the Best Sleep
  • Sleep and Mental Health
    • Sleep and Mood Disorders
    • Mood Disorder Medications and Sleep
  • Sleep and Nutrition
    • Food and Sleep
    •  Which Foods Help Us Sleep?
    • Alcohol and Sleep
    • Weight Gain and Sleep
  • Sleep and Stress
    • How Does Stress Affect Sleep?
    • Stress and Sleep Disorders
  • Sleep Hygiene
    • Sleep Hygiene Basics
    • The Benefits of Sleep Hygiene
    • If Sleep Hygiene Doesn’t Help
  • Women and Sleep
    • Gender Differences and Sleep
    • Sleep and Pregnancy
    • Sleep and Menopause

Sleep Experts

Dr. Michael Grandner, Ph.D

Michael-Grandner Sleep A-Z

Clinical psychologist, Director of the Sleep and Health Research Program at the University of Arizona

Janet K. Kennedy, Ph.D

Janet Sleep A-Z

Clinical Psychologist, author of The Good Sleeper: The Essential Guide to Sleep for Your Baby (and You)

Dr. Whitney Roban, Ph.D

whitney Sleep A-Z

Clinical Psychologist, Author, and Family Sleep Specialist

Sleep Disorders

Sleep Disorders: Insomnias, Sleep-Related Breathing Disorders, Hypersomnias, Circadian Rhythm Sleep-Wake Disorders, Parasomnias and Sleep-Related Movement Disorders.

  • What is a Sleep Disorder?
  • Insomnia
    • Insomnia Symptoms Vs. Insomnia Disorder
    • Types of Insomnia
    • Insomnia Causes
  • Circadian Rhythm and Sleep/Wake Disorders
    • Jet Lag
    • Shift Work
    • Seasonal Affective Disorder
    • Daylight Saving Time
    • Delayed Sleep Phase Disorder
  • Sleep-Related Movement Disorders
    • Restless Legs Syndrome
    • Periodic Limb Movement Disorder (PLMD)
    • Bruxism, or Teeth-Grinding
    • Rhythmic Movement Disorder (RMD)
    • Nocturnal Leg Cramps
  • Sleep-Related Breathing Disorders
    • Snoring
    • Sleep Apnea/Obstructive Sleep Apnea
    • Hypoventilation/Hypoxemia Disorders
    • Infant and Child Sleep Apnea
  • Parasomnias
    • Sleep Paralysis
    • Night Terrors and Nightmare Disorder
    • REM Sleep Behavior Disorder
    • Sleepwalking
    • Exploding Head Syndrome
    • Hypnagogic Hallucinations
  • Hypersomnias
    • Narcolepsy, Types 1 and 2
    • Kleine-Levin Syndrome
    • Idiopathic Hypersomnia
    • Secondary Hypersomnia

Sleep Medicine

Sleep Medicine Resources

  • CBT-1 — Therapy for Sleep
    • Sleep Restriction
    • Stimulus Control Training
    • Relaxation Techniques
    • Psychotherapy
  • Sleep Medications
  • Medications A-Z
  • Non-Pharmaceutical Treatments
    • Acupuncture
    • C-PAP Treatment
    • Light Therapy
    • Natural Sleep Aids
  • Finding a Sleep Specialist
kids-sleep Sleep A-Z

“The most common sleep problems in childreninclude difficulty falling asleep, nighttime awakenings, snoring, stalling and resisting going to bed, sleep apnea, and loud or heavy breathing whilesleeping.”

Kids Sleep

Sleep Medicine Resources

  • How Much Should My Child Sleep?
  • Sleep and Children’s Health Challenges
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Amir Iqbal

I am Amir
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