Your tongue falls backward and blocks your airway when the muscles that hold it in place relax, most commonly during sleep. This is the central mechanism behind obstructive sleep apnea and snoring in many people. Several approaches can help, ranging from simple position changes and mouth exercises to oral devices and surgical options, depending on how severe the obstruction is.
Why the Tongue Falls Back
The tongue is a complex structure controlled by both intrinsic muscles (inside the tongue itself) and extrinsic muscles that anchor it to the jaw, skull, and throat. During waking hours, these muscles maintain enough tension to keep the tongue forward and the airway clear. During sleep, muscle tone drops throughout the body, and the tongue can slide toward the back of the throat, narrowing or completely blocking airflow.
Research using MRI imaging has found that people with obstructive sleep apnea have significantly larger tongues with more fat deposited at the tongue base compared to people without the condition, even after accounting for body weight, age, and gender. This extra tissue makes the tongue heavier and more likely to collapse into the airway when muscles relax. The severity of airway obstruction correlates directly with both tongue volume and the amount of fat within the tongue.
Sleep Position and Its Limits
Sleeping on your side is the most commonly recommended first step, and it does help many people. One study of 85 patients found that tongue base obstruction dropped from 71% of patients when sleeping on their back to just 7% when sleeping on their side. However, newer endoscopic research has complicated this picture. In patients whose obstruction was specifically caused by a posteriorly positioned tongue, switching to side sleeping did not actually move the tongue forward in seven out of ten cases, and airflow did not improve.
What side sleeping does reliably reduce is epiglottic collapse, where the small flap above your windpipe folds over the airway. In those patients, collapse dropped from about 67% to 12% when switching from back to side sleeping. So if your obstruction involves the epiglottis or the soft palate rather than the tongue base alone, positional therapy works well. If the tongue itself is the primary problem, you may need additional interventions.
To train yourself to stay off your back, you can sew a tennis ball into the back of a sleep shirt, use a positional therapy belt, or try a wedge pillow that elevates your upper body at a 30 to 45 degree angle.
Keeping the Mouth Closed During Sleep
Breathing through your mouth during sleep pulls the tongue backward and worsens airway collapse. Keeping the mouth shut, whether with porous medical tape across the lips or a chin strap, has measurable effects on tongue position. In one study, applying a chin strap increased the distance between the tongue base and the back wall of the throat from 7.8 mm to 9.7 mm. Another study using an adhesive mouth seal found an even larger improvement, with that space increasing from 6.8 mm to 10.2 mm.
These findings make sense: when you breathe through your nose, the tongue naturally rests against the roof of the mouth and stays forward. Mouth breathing lets the jaw drop and the tongue fall back. Mouth taping also reduces air leakage for people using CPAP machines, cutting the percentage of sleep time with mouth leak from about 43% to 24%. If you try mouth taping, use porous surgical tape designed for skin, not household tape, and make sure you can breathe comfortably through your nose before attempting it.
Oral Appliances
Two main types of dental devices physically reposition the tongue or jaw to keep the airway open during sleep.
Mandibular advancement devices are the most common. These are custom-fitted two-piece mouthpieces that push your lower jaw forward during sleep, which pulls the tongue base away from the throat. They look similar to a sports mouthguard but have interlocking ramps that hold the jaw in a protruded position. Most are made by a dentist who specializes in sleep medicine.
Tongue stabilizing devices take a different approach. Instead of moving the jaw, they use a soft silicone bulb that sits outside your lips. You insert your tongue into the bulb, squeeze it to create suction, and the device holds your tongue in a forward position all night. These don’t require custom fitting or dental coverage, making them simpler and less expensive. To use one, you place the flanges between your lips and teeth, slide your tongue into the bulb as far as comfortable, then squeeze and release to create the suction hold.
Overall, oral appliance effectiveness ranges from 19% to 80% depending on how success is measured and how severe the obstruction is. They work best for mild to moderate cases. Patient satisfaction tends to be higher than with CPAP: one comparison found 76% satisfaction with oral appliances versus 43% for CPAP among people using their device more than four hours per night.
Tongue and Throat Exercises
Orofacial myofunctional therapy uses targeted exercises to strengthen the muscles that keep the tongue and soft tissues from collapsing. Research suggests these exercises can reduce fat within the tongue and improve the muscle tone needed to maintain airway openness. The exercises focus on building strength, endurance, and proper resting posture of the tongue, lips, and throat.
Practical exercises include pressing the tip of your tongue firmly against the roof of your mouth and holding for several seconds, sliding the tongue along the palate from front to back, and pressing the full body of the tongue against the roof of the mouth. Lip exercises like holding a thin object (a popsicle stick or piece of cardboard) between your lips for five seconds, repeated five to ten times, build the lip seal strength needed to maintain nasal breathing. Even drinking through a straw with thicker liquids can engage the relevant muscles. Using twisted straws or thicker drinks like smoothies demands more effort and increases the training effect.
Sessions typically last about 30 minutes. Starting weekly and gradually spacing to every two weeks, then monthly, is a common progression. The goal is to practice long enough that proper tongue posture and nasal breathing become automatic, even during sleep.
Losing Weight Reduces Tongue Fat
If you carry extra weight, losing it is one of the most effective ways to reduce tongue-related airway obstruction. MRI studies have shown that people with sleep apnea have significantly more fat deposited within the tongue compared to weight-matched controls, and this intramuscular tongue fat directly correlates with how many breathing interruptions occur per hour. Weight loss reduces fat throughout the body, and the tongue is no exception. Research shows that weight loss removes more than twice as much fat as lean mass, which means the fatty tissue crowding the airway shrinks meaningfully.
Nerve Stimulation Therapy
For people who can’t tolerate CPAP or oral appliances, a surgically implanted device can electrically stimulate the nerve that controls the tongue. A small generator is placed under the skin of the chest, with a wire running to the nerve beneath the tongue. It senses your breathing pattern and delivers mild stimulation each time you inhale, gently stiffening the tongue muscles so they don’t collapse.
Current guidelines make this option available to adults 22 and older with moderate to severe sleep apnea (15 to 100 breathing interruptions per hour) who haven’t been able to use CPAP consistently. You need a BMI of 40 or less, and less than 25% of your breathing events must be the central type (originating in the brain rather than from physical obstruction). A sleep endoscopy is performed first to confirm that your soft palate isn’t collapsing in a circular pattern, which predicts poor response to the therapy. Teens aged 13 to 18 with Down syndrome and severe sleep apnea may also qualify under updated guidelines.
Surgical Repositioning of the Tongue
When other treatments fail, surgery can physically move the tongue’s anchor point forward. In genioglossus advancement, a surgeon cuts a small window of bone from the inside of the chin where the tongue’s main muscle attaches, then slides that bone segment forward and secures it with a plate. This increases tension at the base of the tongue and reduces the likelihood of it prolapsing into the airway during sleep. The chin’s outer profile can be maintained or even reduced during the procedure, so it doesn’t change your facial appearance. This surgery is typically combined with other procedures targeting the soft palate or other sites of obstruction rather than performed alone.