
Sleeping with your tongue out could be an indication of an underlying medical condition. For example, it could be a sign of a seizure, epilepsy, or sleep apnea. However, it is important to note that the context and situation also play a role in interpreting the meaning of sleeping with your tongue out. For instance, in some cultures, it may be considered a rude gesture, while in others, it may signify respect or a greeting. In babies, sticking out the tongue could be a normal part of discovering their bodies and imitating those around them. Additionally, certain anatomical features, such as a large tongue or a small jaw, might cause the tongue to protrude while sleeping.
| Characteristics | Values |
|---|---|
| Social and cultural meanings | Sticking your tongue out can be a sign of defiance, disrespect, or playfulness, depending on the context, situation, and intent. In certain cultures, it may also signify respect or a greeting. |
| Medical conditions | Macroglossia (enlarged tongue) or Micrognathia (smaller-than-average jaw) can cause the tongue to protrude due to insufficient space in the mouth. |
| Infant and child behavior | Infants and young children may stick out their tongues as part of their exploration of the body and the world around them. It can also be a sign of hunger or imitation of those around them. |
| Sleep-related issues | Mouth breathing while sleeping can lead to dryness, increasing the risk of cavities and gum issues. Sleep apnea, epilepsy, and bruxism (teeth grinding) are also associated with tongue-related issues during sleep. |
| Dog-specific reasons | Dogs with longer tongues or certain breeds with shorter snouts and flatter faces (brachycephalic) may sleep with their tongues out due to anatomy. Relaxation, dreaming, injuries, respiratory problems, and neurological issues can also contribute. |
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What You'll Learn

It could indicate a medical condition
While sleeping with your tongue out can be harmless, it could also indicate a medical condition. For example, macroglossia is the medical term for a large tongue, and a person with this condition may stick their tongue out more than normal, especially if their tongue does not fit in their mouth. Macroglossia is often secondary to other conditions, such as Down syndrome, hypothyroidism, or Beckwith-Wiedemann syndrome, and may be caused by abnormal muscle growth or genetics. Micrognathia, a smaller-than-average jaw, may also cause the tongue to stick out if it does not fit in the mouth. Micrognathia can develop in conditions such as Pierre Robin Sequence or cleft palate.
Tongue-thrusting, or the habit of pushing the tongue against the teeth or the roof of the mouth, can also cause the tongue to stick out during sleep. Tongue thrusting may develop from mouth breathing issues, and it can be corrected through myofunctional therapy or, in some cases, surgery. Mouth breathing can also lead to cavities or gum issues, as saliva cannot effectively clean the inside of the mouth when it is dry.
Tongue-biting during sleep can also be indicative of underlying medical conditions, such as sleep apnea, epilepsy, seizures, or facial muscle spasms. Sleep apnea occurs when the tongue falls back and the airway narrows, causing snoring and breathing difficulties. Tongue-biting may also be caused by bruxism, or teeth grinding and clenching, which can lead to soreness, pain, and injury.
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Relaxed facial muscles
Facial tension can be caused by underlying stress, and it can lead to discomfort and pain in the face, neck, and shoulders. Facial tension is a natural response to emotional or physical stress, as the body's "'fight or flight' system" is activated, causing the muscles to contract.
Facial tension can be alleviated through general stress management techniques such as meditation, exercise, and other self-care practices. Facial exercises can also help reduce tension in the muscles of the face, jaw, and neck. Here are some exercises to relax your facial muscles:
- Happy Face: Smile as wide as you can, hold for a count of 5, and then relax. Do 10 repetitions per set.
- Slack Jaw: Let your jaw fully relax and your mouth hang open. Touch the tip of your tongue to the highest point of the roof of your mouth. Hold for a count of 5, then ease your jaw back into a resting, closed-mouth position. Do 10 reps per set.
- Brow Furrow: Wrinkle your forehead by arching your eyebrows as high as possible. Hold for a count of 15, then relax. Do 3 reps per set.
- Eye Squeeze: Close your eyes tightly and hold for 20 seconds. Then, make your eyes go blank by completely relaxing all the little muscles around your eyes and stare expressionless for 15 seconds.
- Forehead Press: Rest your elbow on your desk and your forehead (at the eyebrow line) on the heel of your hand. Breathe and relax your neck, allowing your head to feel heavy.
- Temple Massage: Place the heels of your hands on your temples. Press your hands together and drag them upward, taking out the slack in your tissues. Breathe, then open and close your mouth. Move your jaw from side to side with your mouth open.
Additionally, working with your ears can help relax and release facial tension. Try the "Spock Hands" technique by joining your index and middle fingers, and your ring and pinkie fingers together to make a V. Slide your hands under your ears within the V of your fingers. Without sliding over your skin or hair, drag your skin in slow circles.
Mouth breathing during sleep can lead to a dry mouth, which can cause cavities and gum issues. It can also be a sign of underlying orofacial myofunctional disorders, which can result in a narrowed airway and sleep apnea. Strengthening and retraining the oropharyngeal muscles through myofunctional therapy can help address these issues.
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Respiratory problems
The tongue is a vital component of the upper airway, and its size, structure, and function can impact and indicate respiratory issues. A person's tongue posture and positioning can affect their breathing, particularly during sleep.
During sleep, the tongue relaxes and can fall back, blocking the airway and causing breathing difficulties. This condition is known as Obstructive Sleep Apnea (OSA), characterised by repeated episodes of narrowed or blocked airways, resulting in laboured breathing, snoring, fragmented sleep, and daytime drowsiness. OSA can lead to serious complications, including an increased risk of heart disease, high blood pressure, and type 2 diabetes.
The tongue's size and structure can contribute to OSA. A large tongue may not fit comfortably in the palate, causing it to protrude and obstruct the airway. This can be exacerbated by a condition called retrognathia, where the lower jaw is pulled back, pushing the tongue backwards. Additionally, a "scalloped tongue" or an unusually large tongue can indicate a higher risk of OSA, as it can crowd the airway and make it more prone to obstruction during sleep.
Orofacial Myofunctional Disorders (OMDs) can also lead to respiratory problems. These disorders are characterised by weakened or underdeveloped muscles in the face, mouth, and throat, which can disrupt the harmony between these muscle groups. OMDs can result in improper tongue posture, such as tongue tie or tongue thrust, affecting the range of motion and contributing to airway obstruction.
To address these respiratory issues, treatments such as oral devices, sleeping position training, and myofunctional therapy are recommended. Oral devices, such as mandibular advancement devices (MADs), help keep the jaw forward and the airway open during sleep. Sleeping position training encourages side or stomach sleeping, reducing the likelihood of airway collapse. Myofunctional therapy, on the other hand, focuses on strengthening and retraining the oropharynx through repetitive exercises, improving tongue posture and function.
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Neurological issues
While it is quite common for dogs to sleep with their tongues out, there are some instances where it could be indicative of neurological issues. Hanging Tongue Syndrome is a condition where dogs are unable to pull their tongues back into their mouths, resulting in their tongues hanging out at all times. This syndrome can be caused by anatomical factors, such as a tongue that is too large for the oral cavity, or missing teeth that create a gap for the tongue to protrude. However, it can also be caused by trauma or injury to the face, jaw, or nerves. In such cases, Hanging Tongue Syndrome is a result of neurological issues affecting the nerves or muscles in the face.
Additionally, certain medications can induce deeper or more relaxed sleep in dogs, which may cause their tongues to loll out. If you notice that your dog has started sleeping with its tongue out after beginning a new medication, it is advisable to consult your veterinarian to ensure your dog's medication does not need adjustment.
While not always indicative of neurological issues, sleeping with the tongue out can sometimes be a sign of dental issues. If your dog is also exhibiting decreased appetite, drooling excessively, or showing any other signs of discomfort, it is recommended to contact your veterinarian to address potential dental problems.
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It's normal for babies
While it is normal for babies to stick their tongues out when they are awake, it is less common for them to sleep with their tongues out. When babies sleep, their mouths should typically be closed, and their tongues should be up in the palate area. However, it is not uncommon for babies to sleep with their mouths open occasionally, and this is generally not a cause for concern.
Babies can sleep with their mouths and tongues open for several reasons. One reason could be nasal congestion, which is common in newborns due to mucus or nasal congestion. This may cause them to breathe through their mouths, making it easier for air to enter. Certain sleeping positions, such as sleeping on the back, in someone's arms, or in a baby carrier, may also cause babies to keep their mouths open. If this occurs only occasionally and under these circumstances, it is usually nothing to worry about, as it is also common for adults to sleep with their mouths open in certain situations.
However, if a baby constantly sleeps with an open mouth and tongue protruding, it is recommended to investigate further. Mouth breathing in babies can lead to several issues and modifications in functions and structures. One possible reason for mouth breathing is tongue-tie (ankyloglossia), a congenital anomaly where the band of tissue connecting the tongue to the floor of the mouth is shorter or tighter than normal, restricting tongue movement. Tongue-tie can affect various oral functions such as eating, sucking, chewing, swallowing, and speaking. It can also cause breastfeeding difficulties, such as painful nursing episodes for the mother and slow weight gain in the baby. Tongue-tie can also lead to or exacerbate mouth breathing, preventing the brain from experiencing the deepest level of sleep and resulting in broken sleep and daytime sleepiness.
In summary, while it is generally normal for babies to stick their tongues out when awake, sleeping with the tongue out constantly could indicate underlying issues such as tongue-tie or breathing problems. If you notice your baby sleeping with their tongue out regularly, it is recommended to consult a healthcare professional to ensure there are no underlying causes for concern.
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Frequently asked questions
Dogs sleep with their tongues out for a variety of reasons. It could be due to their anatomy, with certain breeds having longer tongues or shorter snouts and flatter faces. It could also be because they are relaxed, or panting in their sleep, or due to an injury to the jaw or face. Respiratory problems or neurological issues could also be the reason.
Sleeping with the tongue out could be an indication of an underlying medical condition such as sleep apnea, epilepsy, or bruxism. However, it is also common for people to stick their tongues out while concentrating or lost in thought, and it could be a habit that develops from mouth breathing.
Babies stick their tongues out for various reasons, including discovering their bodies and imitating those around them. It could also be a sign of hunger.











































