---
title: Why Do We Yawn? The Science Behind One of the Body's Biggest Mysteries
description: Discover the science behind yawning, its functions, and why it’s contagious. Learn how yawning relates to alertness, boredom, and sleep quality.
image: https://info.ancsleep.com/hubfs/Canva%20images/Canva%20Design%20DAHOnfIMCAM.png
---

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# ANCSLEEP BLOG

# Why Do We Yawn? The Science Behind One of the Body's Biggest Mysteries

Posted by [Darian Dozier](https://info.ancsleep.com/blog/author/darian-dozier) on Jul 6, 2026 5:50:20 AM

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Have you ever noticed yourself yawning after seeing someone else yawn—or during a long meeting, a boring lecture, or right before bedtime? Yawning is one of the most common human behaviors, yet scientists still don't fully understand why it happens.

Although yawning is often associated with being tired, it can also occur when you're bored, stressed, exercising, or even after simply watching someone else yawn. Researchers believe yawning serves several important functions involving the brain, nervous system, and sleep-wake cycle.

Let's explore what science currently tells us about this fascinating behavior.

## What Is a Yawn?

A yawn is an involuntary reflex that typically involves:

- Opening the mouth widely
- Taking a deep breath in
- Briefly stretching the jaw and facial muscles
- Exhaling slowly

Most yawns last between 4 and 7 seconds and are often accompanied by stretching, tearing of the eyes, or a feeling of increased alertness afterward.

Humans begin yawning before birth, with fetal yawning observed on ultrasound during pregnancy. Many animals—including dogs, cats, birds, reptiles, and even fish—also yawn, suggesting it serves an important biological purpose.

## Why Do We Yawn?

Scientists believe yawning likely has multiple functions rather than a single explanation.

### Yawning Helps Increase Alertness

One of the leading theories is that yawning briefly increases alertness.

When you yawn:

- Your heart rate may increase slightly.
- Facial and neck muscles become activated.
- Blood flow to the brain may temporarily increase.
- The nervous system receives a short burst of stimulation.

This may explain why people often yawn when transitioning between states of wakefulness and sleep.

## Yawning May Help Cool the Brain

One of the strongest modern theories is the **brain cooling hypothesis**.

Researchers believe yawning may help regulate brain temperature by:

- Increasing airflow through the mouth and nasal passages
- Improving blood circulation around the head and neck
- Facilitating heat exchange between the brain and surrounding blood vessels

Just as a computer performs better when it doesn't overheat, the brain may function more efficiently when its temperature is carefully regulated.

Although more research is needed, this theory has gained considerable scientific support.

## Why Do We Yawn When We're Tired?

Yawning is especially common:

- Before falling asleep
- Shortly after waking up
- During periods of fatigue

As your body transitions between sleep and wakefulness, changes occur in your nervous system and circadian rhythm. Yawning may help your brain shift between these states by temporarily increasing alertness.

However, yawning itself does not necessarily mean you didn't get enough sleep.

## Why Do We Yawn When We're Bored?

Many people notice they yawn during activities that require little mental stimulation.

When you're bored:

- Your level of alertness naturally decreases.
- Brain activity slows slightly.
- The nervous system becomes less activated.

Yawning may serve as a way to briefly "wake up" the brain and improve attention.

This may explain why students often yawn during long lectures or employees during lengthy meetings.

## Why Is Yawning Contagious?

Perhaps the most fascinating aspect of yawning is how contagious it can be.

Simply seeing someone yawn—or even reading about yawning—can make you yawn.

Researchers believe contagious yawning is linked to:

- Empathy
- Social bonding
- Mirror neurons
- Emotional awareness

Studies have found that contagious yawning tends to occur more frequently among:

- Family members
- Close friends
- People with stronger social connections

Interestingly, contagious yawning appears less common in very young children and individuals with certain neurological conditions that affect social processing.

## Does Everyone Yawn the Same Amount?

No. The frequency of yawning varies widely between individuals.

Factors that influence yawning include:

- Sleep quality
- Time of day
- Age
- Stress levels
- Room temperature
- Certain medications

Some people rarely yawn, while others may yawn dozens of times throughout the day.

## Can Stress Cause Yawning?

Yes.

Although many people associate yawning with relaxation, it can also occur during periods of emotional stress or anxiety.

Stress activates the autonomic nervous system, and yawning may occur during transitions between heightened arousal and relaxation.

Some athletes also yawn before competitions, and people may yawn before public speaking or other stressful situations.

## Does Caffeine Prevent Yawning?

Caffeine increases alertness by blocking adenosine, a brain chemical that promotes sleepiness.

Because of this, caffeine may temporarily reduce fatigue-related yawning.

However, caffeine does not eliminate yawning entirely. People may still yawn because of boredom, emotional states, or natural changes in brain activity.

## When Is Excessive Yawning a Concern?

Yawning is usually completely normal.

However, frequent or excessive yawning—particularly when it occurs repeatedly throughout the day without obvious fatigue—may occasionally signal an underlying medical condition.

Possible causes include:

- Sleep deprivation
- Obstructive sleep apnea
- Narcolepsy
- Medication side effects
- Anxiety
- Neurological disorders (less commonly)

If excessive yawning is accompanied by persistent daytime sleepiness, loud snoring, morning headaches, or episodes of falling asleep unintentionally, it is worth discussing these symptoms with a healthcare provider.

## Can Better Sleep Reduce Yawning?

Because tiredness is one of the most common triggers, improving sleep habits may reduce excessive yawning.

Helpful strategies include:

- Maintaining a consistent sleep schedule
- Getting 7–9 hours of sleep each night
- Limiting caffeine late in the day
- Creating a relaxing bedtime routine
- Seeking evaluation for persistent sleep problems such as sleep apnea or chronic insomnia

Improving sleep quality often improves daytime alertness as well.

## The Bottom Line

Yawning is a normal, complex behavior that scientists believe helps regulate alertness, brain temperature, and transitions between sleep and wakefulness. While it is most commonly associated with tiredness, yawning can also occur during boredom, stress, or even after seeing someone else yawn.

In most cases, yawning is simply a normal part of human physiology. However, frequent excessive yawning combined with daytime sleepiness or other symptoms may indicate an underlying sleep disorder that deserves medical evaluation.

Understanding why we yawn reminds us that even the simplest everyday behaviors are connected to the remarkable ways our brains and bodies work together.

If you're yawning frequently despite getting what seems like enough sleep, don't ignore it. Persistent daytime sleepiness, loud snoring, or waking up feeling unrefreshed could be signs of an underlying sleep disorder. A conversation with your healthcare provider or a sleep specialist may help uncover the cause and improve both your sleep and overall health.

[![Take a Free Online Sleep Test](https://no-cache.hubspot.com/cta/default/2589155/7aac5edb-65b7-4bef-a8f3-925ec898aff1.png)](https://cta-redirect.hubspot.com/cta/redirect/2589155/7aac5edb-65b7-4bef-a8f3-925ec898aff1)

 

 Topics: [yawn](https://info.ancsleep.com/blog/topic/yawn), [yawning](https://info.ancsleep.com/blog/topic/yawning)

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- [cognition and sleep (2)](https://info.ancsleep.com/blog/topic/cognition-and-sleep)
- [cold (2)](https://info.ancsleep.com/blog/topic/cold)
- [cold plunges and sleep (2)](https://info.ancsleep.com/blog/topic/cold-plunges-and-sleep)
- [concentration (2)](https://info.ancsleep.com/blog/topic/concentration)
- [diabetes and sleep (2)](https://info.ancsleep.com/blog/topic/diabetes-and-sleep)
- [fertility and sleep (2)](https://info.ancsleep.com/blog/topic/fertility-and-sleep)
- [headache (2)](https://info.ancsleep.com/blog/topic/headache)
- [hypersomnia (2)](https://info.ancsleep.com/blog/topic/hypersomnia)
- [light (2)](https://info.ancsleep.com/blog/topic/light)
- [meditation and sleep (2)](https://info.ancsleep.com/blog/topic/meditation-and-sleep)
- [menstrual cycle and sleep (2)](https://info.ancsleep.com/blog/topic/menstrual-cycle-and-sleep)
- [mental health and sleep (2)](https://info.ancsleep.com/blog/topic/mental-health-and-sleep)
- [mouth breathing (2)](https://info.ancsleep.com/blog/topic/mouth-breathing)
- [natural sleep remedies (2)](https://info.ancsleep.com/blog/topic/natural-sleep-remedies)
- [night shift (2)](https://info.ancsleep.com/blog/topic/night-shift)
- [nighttime awakenings (2)](https://info.ancsleep.com/blog/topic/nighttime-awakenings)
- [nighttime urination (2)](https://info.ancsleep.com/blog/topic/nighttime-urination)
- [nocturnal enuresis (2)](https://info.ancsleep.com/blog/topic/nocturnal-enuresis)
- [nrem (2)](https://info.ancsleep.com/blog/topic/nrem)
- [obesity and sleep (2)](https://info.ancsleep.com/blog/topic/obesity-and-sleep)
- [oversleeping (2)](https://info.ancsleep.com/blog/topic/oversleeping)
- [pajamas (2)](https://info.ancsleep.com/blog/topic/pajamas)
- [partner sleep (2)](https://info.ancsleep.com/blog/topic/partner-sleep)
- [ptsd (2)](https://info.ancsleep.com/blog/topic/ptsd)
- [ptsd and sleep (2)](https://info.ancsleep.com/blog/topic/ptsd-and-sleep)
- [restorative sleep (2)](https://info.ancsleep.com/blog/topic/restorative-sleep)
- [roommate sleep (2)](https://info.ancsleep.com/blog/topic/roommate-sleep)
- [screen time and sleep (2)](https://info.ancsleep.com/blog/topic/screen-time-and-sleep)
- [seizure (2)](https://info.ancsleep.com/blog/topic/seizure)
- [sleep and emotion (2)](https://info.ancsleep.com/blog/topic/sleep-and-emotion)
- [sleep habits (2)](https://info.ancsleep.com/blog/topic/sleep-habits)
- [sleep latency (2)](https://info.ancsleep.com/blog/topic/sleep-latency)
- [sleep therapy (2)](https://info.ancsleep.com/blog/topic/sleep-therapy)
- [sleepiness (2)](https://info.ancsleep.com/blog/topic/sleepiness)
- [sleeping fabrics (2)](https://info.ancsleep.com/blog/topic/sleeping-fabrics)
- [smart beds (2)](https://info.ancsleep.com/blog/topic/smart-beds)
- [social jet lag (2)](https://info.ancsleep.com/blog/topic/social-jet-lag)
- [social media (2)](https://info.ancsleep.com/blog/topic/social-media)
- [stroke and sleep (2)](https://info.ancsleep.com/blog/topic/stroke-and-sleep)
- [testosterone and sleep (2)](https://info.ancsleep.com/blog/topic/testosterone-and-sleep)
- [thyroid (2)](https://info.ancsleep.com/blog/topic/thyroid)
- [vitamin deficiency and sleep (2)](https://info.ancsleep.com/blog/topic/vitamin-deficiency-and-sleep)
- [weight loss and sleep (2)](https://info.ancsleep.com/blog/topic/weight-loss-and-sleep)
- [womens sleep (2)](https://info.ancsleep.com/blog/topic/womens-sleep)
- [Academics and sleep (1)](https://info.ancsleep.com/blog/topic/academics-and-sleep)
- [CKD (1)](https://info.ancsleep.com/blog/topic/ckd)
- [Cleaning (1)](https://info.ancsleep.com/blog/topic/cleaning)
- [Cortisol (1)](https://info.ancsleep.com/blog/topic/cortisol)
- [Crohn's Disease (1)](https://info.ancsleep.com/blog/topic/crohns-disease)
- [Dementia and sleep (1)](https://info.ancsleep.com/blog/topic/dementia-and-sleep)
- [Kidney disease (1)](https://info.ancsleep.com/blog/topic/kidney-disease)
- [Neuropathy (1)](https://info.ancsleep.com/blog/topic/neuropathy)
- [New Puppy (1)](https://info.ancsleep.com/blog/topic/new-puppy)
- [Peripheral neuropathy (1)](https://info.ancsleep.com/blog/topic/peripheral-neuropathy)
- [Pulmonology (1)](https://info.ancsleep.com/blog/topic/pulmonology)
- [RLS (1)](https://info.ancsleep.com/blog/topic/rls)
- [Reflux (1)](https://info.ancsleep.com/blog/topic/reflux)
- [SRPE (1)](https://info.ancsleep.com/blog/topic/srpe)
- [Sleep Talking (1)](https://info.ancsleep.com/blog/topic/sleep-talking)
- [Sleep and Eyesight (1)](https://info.ancsleep.com/blog/topic/sleep-and-eyesight)
- [Sleep related painful erections (1)](https://info.ancsleep.com/blog/topic/sleep-related-painful-erections)
- [Ulcerative Colitis (1)](https://info.ancsleep.com/blog/topic/ulcerative-colitis)
- [acid reflux (1)](https://info.ancsleep.com/blog/topic/acid-reflux)
- [addiction and sleep (1)](https://info.ancsleep.com/blog/topic/addiction-and-sleep)
- [adjustable beds (1)](https://info.ancsleep.com/blog/topic/adjustable-beds)
- [ai and sleep (1)](https://info.ancsleep.com/blog/topic/ai-and-sleep)
- [all nighter (1)](https://info.ancsleep.com/blog/topic/all-nighter)
- [altitude (1)](https://info.ancsleep.com/blog/topic/altitude)
- [alzheimers and sleep (1)](https://info.ancsleep.com/blog/topic/alzheimers-and-sleep)
- [anemia and fatigue (1)](https://info.ancsleep.com/blog/topic/anemia-and-fatigue)
- [antioxidants (1)](https://info.ancsleep.com/blog/topic/antioxidants)
- [antipsychotics (1)](https://info.ancsleep.com/blog/topic/antipsychotics)
- [aromatherapy and sleep (1)](https://info.ancsleep.com/blog/topic/aromatherapy-and-sleep)
- [arthritis and sleep (1)](https://info.ancsleep.com/blog/topic/arthritis-and-sleep)
- [artificial intelligence and sleep (1)](https://info.ancsleep.com/blog/topic/artificial-intelligence-and-sleep)
- [autism and sleep (1)](https://info.ancsleep.com/blog/topic/autism-and-sleep)
- [back pain (1)](https://info.ancsleep.com/blog/topic/back-pain)
- [back pain and sleep (1)](https://info.ancsleep.com/blog/topic/back-pain-and-sleep)
- [bipap (1)](https://info.ancsleep.com/blog/topic/bipap)
- [bipolar disorder and sleep (1)](https://info.ancsleep.com/blog/topic/bipolar-disorder-and-sleep)
- [breastfeeding and sleep (1)](https://info.ancsleep.com/blog/topic/breastfeeding-and-sleep)
- [burnout (1)](https://info.ancsleep.com/blog/topic/burnout)
- [caffeine withdrawal (1)](https://info.ancsleep.com/blog/topic/caffeine-withdrawal)
- [cbti (1)](https://info.ancsleep.com/blog/topic/cbti)
- [cerebral palsy and sleep (1)](https://info.ancsleep.com/blog/topic/cerebral-palsy-and-sleep)
- [chronic kidney disease (1)](https://info.ancsleep.com/blog/topic/chronic-kidney-disease)
- [climate and sleep (1)](https://info.ancsleep.com/blog/topic/climate-and-sleep)
- [cluster headache and sleep (1)](https://info.ancsleep.com/blog/topic/cluster-headache-and-sleep)
- [college students (1)](https://info.ancsleep.com/blog/topic/college-students)
- [cosleeping (1)](https://info.ancsleep.com/blog/topic/cosleeping)
- [cpap alternatives (1)](https://info.ancsleep.com/blog/topic/cpap-alternatives)
- [daytime fatigue (1)](https://info.ancsleep.com/blog/topic/daytime-fatigue)
- [decision-making and sleep (1)](https://info.ancsleep.com/blog/topic/decision-making-and-sleep)
- [desert sleep (1)](https://info.ancsleep.com/blog/topic/desert-sleep)
- [dialysis and fatigue (1)](https://info.ancsleep.com/blog/topic/dialysis-and-fatigue)
- [digestion and sleep (1)](https://info.ancsleep.com/blog/topic/digestion-and-sleep)
- [doomscrolling and sleep (1)](https://info.ancsleep.com/blog/topic/doomscrolling-and-sleep)
- [drowsy teen driving (1)](https://info.ancsleep.com/blog/topic/drowsy-teen-driving)
- [dry climate and sleep (1)](https://info.ancsleep.com/blog/topic/dry-climate-and-sleep)
- [eczema and sleep (1)](https://info.ancsleep.com/blog/topic/eczema-and-sleep)
- [epworth sleep scale (1)](https://info.ancsleep.com/blog/topic/epworth-sleep-scale)
- [essential oils (1)](https://info.ancsleep.com/blog/topic/essential-oils)
- [estrogen and sleep (1)](https://info.ancsleep.com/blog/topic/estrogen-and-sleep)
- [excessive daytime sleepiness (1)](https://info.ancsleep.com/blog/topic/excessive-daytime-sleepiness)
- [exploding head syndrome (1)](https://info.ancsleep.com/blog/topic/exploding-head-syndrome)
- [face shape and sleep (1)](https://info.ancsleep.com/blog/topic/face-shape-and-sleep)
- [family sleep health (1)](https://info.ancsleep.com/blog/topic/family-sleep-health)
- [fasting and sleep (1)](https://info.ancsleep.com/blog/topic/fasting-and-sleep)
- [fibroids and sleep (1)](https://info.ancsleep.com/blog/topic/fibroids-and-sleep)
- [fibromyalgia (1)](https://info.ancsleep.com/blog/topic/fibromyalgia)
- [fibromyalgia and sleep (1)](https://info.ancsleep.com/blog/topic/fibromyalgia-and-sleep)
- [focus (1)](https://info.ancsleep.com/blog/topic/focus)
- [focus and sleep (1)](https://info.ancsleep.com/blog/topic/focus-and-sleep)
- [glp1 and sleep (1)](https://info.ancsleep.com/blog/topic/glp1-and-sleep)
- [glymphatic system (1)](https://info.ancsleep.com/blog/topic/glymphatic-system)
- [gout (1)](https://info.ancsleep.com/blog/topic/gout)
- [grief (1)](https://info.ancsleep.com/blog/topic/grief)
- [grief and sleep (1)](https://info.ancsleep.com/blog/topic/grief-and-sleep)
- [gut health and sleep (1)](https://info.ancsleep.com/blog/topic/gut-health-and-sleep)
- [heart failure (1)](https://info.ancsleep.com/blog/topic/heart-failure)
- [heart health and sleep (1)](https://info.ancsleep.com/blog/topic/heart-health-and-sleep)
- [herbal remedies for sleep (1)](https://info.ancsleep.com/blog/topic/herbal-remedies-for-sleep)
- [high blood pressure and sleep (1)](https://info.ancsleep.com/blog/topic/high-blood-pressure-and-sleep)
- [hot flashes and sleep (1)](https://info.ancsleep.com/blog/topic/hot-flashes-and-sleep)
- [hypervigilence and sleep (1)](https://info.ancsleep.com/blog/topic/hypervigilence-and-sleep)
- [hypoglycemia (1)](https://info.ancsleep.com/blog/topic/hypoglycemia)
- [inflammation (1)](https://info.ancsleep.com/blog/topic/inflammation)
- [irritable bowel syndrome (1)](https://info.ancsleep.com/blog/topic/irritable-bowel-syndrome)
- [late night (1)](https://info.ancsleep.com/blog/topic/late-night)
- [learning and sleep (1)](https://info.ancsleep.com/blog/topic/learning-and-sleep)
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- [leg swelling (1)](https://info.ancsleep.com/blog/topic/leg-swelling)
- [light therapy (1)](https://info.ancsleep.com/blog/topic/light-therapy)
- [liver disease (1)](https://info.ancsleep.com/blog/topic/liver-disease)
- [metabolic syndrome and sleep (1)](https://info.ancsleep.com/blog/topic/metabolic-syndrome-and-sleep)
- [microsleep (1)](https://info.ancsleep.com/blog/topic/microsleep)
- [middle age (1)](https://info.ancsleep.com/blog/topic/middle-age)
- [midnight awakenings (1)](https://info.ancsleep.com/blog/topic/midnight-awakenings)
- [migraine (1)](https://info.ancsleep.com/blog/topic/migraine)
- [morning fatigue (1)](https://info.ancsleep.com/blog/topic/morning-fatigue)
- [mouthguards and sleep (1)](https://info.ancsleep.com/blog/topic/mouthguards-and-sleep)
- [multiple sclerosis (1)](https://info.ancsleep.com/blog/topic/multiple-sclerosis)
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- [new mother sleep (1)](https://info.ancsleep.com/blog/topic/new-mother-sleep)
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- [nighttime affirmations (1)](https://info.ancsleep.com/blog/topic/nighttime-affirmations)
- [nighttime hives (1)](https://info.ancsleep.com/blog/topic/nighttime-hives)
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- [nighttime worry (1)](https://info.ancsleep.com/blog/topic/nighttime-worry)
- [ocd and sleep (1)](https://info.ancsleep.com/blog/topic/ocd-and-sleep)
- [outdoor sleep (1)](https://info.ancsleep.com/blog/topic/outdoor-sleep)
- [oxytocin and sleep (1)](https://info.ancsleep.com/blog/topic/oxytocin-and-sleep)
- [parent (1)](https://info.ancsleep.com/blog/topic/parent)
- [parenting (1)](https://info.ancsleep.com/blog/topic/parenting)
- [peripheral vascular disease and sleep (1)](https://info.ancsleep.com/blog/topic/peripheral-vascular-disease-and-sleep)
- [phones and sleep (1)](https://info.ancsleep.com/blog/topic/phones-and-sleep)
- [physical activity (1)](https://info.ancsleep.com/blog/topic/physical-activity)
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- [plmd (1)](https://info.ancsleep.com/blog/topic/plmd)
- [poor sleep (1)](https://info.ancsleep.com/blog/topic/poor-sleep)
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- [progesterone and sleep (1)](https://info.ancsleep.com/blog/topic/progesterone-and-sleep)
- [protein and sleep (1)](https://info.ancsleep.com/blog/topic/protein-and-sleep)
- [psych (1)](https://info.ancsleep.com/blog/topic/psych)
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- [recovery and sleep (1)](https://info.ancsleep.com/blog/topic/recovery-and-sleep)
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- [retirement and sleep (1)](https://info.ancsleep.com/blog/topic/retirement-and-sleep)
- [revenge bedtime procrastination (1)](https://info.ancsleep.com/blog/topic/revenge-bedtime-procrastination)
- [school and sleep (1)](https://info.ancsleep.com/blog/topic/school-and-sleep)
- [sciatica and sleep (1)](https://info.ancsleep.com/blog/topic/sciatica-and-sleep)
- [sedentary lifestyle and sleep (1)](https://info.ancsleep.com/blog/topic/sedentary-lifestyle-and-sleep)
- [sids (1)](https://info.ancsleep.com/blog/topic/sids)
- [sjrogrens and sleep (1)](https://info.ancsleep.com/blog/topic/sjrogrens-and-sleep)
- [sleep and appetite (1)](https://info.ancsleep.com/blog/topic/sleep-and-appetite)
- [sleep and empathy (1)](https://info.ancsleep.com/blog/topic/sleep-and-empathy)
- [sleep and executive functioning (1)](https://info.ancsleep.com/blog/topic/sleep-and-executive-functioning)
- [sleep and mood (1)](https://info.ancsleep.com/blog/topic/sleep-and-mood)
- [sleep and outlook (1)](https://info.ancsleep.com/blog/topic/sleep-and-outlook)
- [sleep and reflexes (1)](https://info.ancsleep.com/blog/topic/sleep-and-reflexes)
- [sleep and self-perception (1)](https://info.ancsleep.com/blog/topic/sleep-and-self-perception)
- [sleep and stroke (1)](https://info.ancsleep.com/blog/topic/sleep-and-stroke)
- [sleep and temperature (1)](https://info.ancsleep.com/blog/topic/sleep-and-temperature)
- [sleep and trauma (1)](https://info.ancsleep.com/blog/topic/sleep-and-trauma)
- [sleep and work (1)](https://info.ancsleep.com/blog/topic/sleep-and-work)
- [sleep doctors (1)](https://info.ancsleep.com/blog/topic/sleep-doctors)
- [sleep drive (1)](https://info.ancsleep.com/blog/topic/sleep-drive)
- [sleep inertia (1)](https://info.ancsleep.com/blog/topic/sleep-inertia)
- [sleep influencers (1)](https://info.ancsleep.com/blog/topic/sleep-influencers)
- [sleep score (1)](https://info.ancsleep.com/blog/topic/sleep-score)
- [sleepwear (1)](https://info.ancsleep.com/blog/topic/sleepwear)
- [snacks (1)](https://info.ancsleep.com/blog/topic/snacks)
- [snooze (1)](https://info.ancsleep.com/blog/topic/snooze)
- [social media and sleep (1)](https://info.ancsleep.com/blog/topic/social-media-and-sleep)
- [somniphobia (1)](https://info.ancsleep.com/blog/topic/somniphobia)
- [stimulants and sleep (1)](https://info.ancsleep.com/blog/topic/stimulants-and-sleep)
- [substance abuse and sleep (1)](https://info.ancsleep.com/blog/topic/substance-abuse-and-sleep)
- [supplements (1)](https://info.ancsleep.com/blog/topic/supplements)
- [teeth grinding at night (1)](https://info.ancsleep.com/blog/topic/teeth-grinding-at-night)
- [tension headache and sleep (1)](https://info.ancsleep.com/blog/topic/tension-headache-and-sleep)
- [tmj and sleep (1)](https://info.ancsleep.com/blog/topic/tmj-and-sleep)
- [untreated sleep apnea (1)](https://info.ancsleep.com/blog/topic/untreated-sleep-apnea)
- [vaping and sleep (1)](https://info.ancsleep.com/blog/topic/vaping-and-sleep)
- [weight gain and sleep (1)](https://info.ancsleep.com/blog/topic/weight-gain-and-sleep)
- [weighted blanket and sleep (1)](https://info.ancsleep.com/blog/topic/weighted-blanket-and-sleep)
- [wfh (1)](https://info.ancsleep.com/blog/topic/wfh)
- [worry window (1)](https://info.ancsleep.com/blog/topic/worry-window)
- [yawn (1)](https://info.ancsleep.com/blog/topic/yawn)
- [yawning (1)](https://info.ancsleep.com/blog/topic/yawning)

[see all](https://info.ancsleep.com/blog/why-do-we-yawn-the-science-behind-one-of-the-bodys-biggest-mysteries#)

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