Your ears pop during a workout for the same reason they pop on an airplane: the pressure inside your middle ear is shifting faster than your body can equalize it. The small tube responsible for that equalization, the Eustachian tube, normally opens briefly when you swallow or yawn, but exercise introduces several forces that throw it off balance. Breath-holding during heavy lifts, rapid changes in blood flow, and even jaw clenching can all push or pull middle ear pressure in ways that produce that familiar click, pop, or muffled feeling.
The Tube That Controls Ear Pressure
A narrow passage called the Eustachian tube connects the air-filled space behind your eardrum to the back of your throat. It runs about 36 millimeters long and only 2 to 3 millimeters wide, and it stays closed most of the time.1Europe PMC. Physiology, Eustachian Tube Function When you chew, swallow, or open your jaw wide, the muscles around it pull the tube open for a split second, letting a tiny puff of air move in or out of the middle ear. That air exchange keeps the pressure on both sides of the eardrum roughly equal. When the system is working perfectly, you never notice it. When it cannot keep up with a rapid pressure shift, the eardrum gets pushed inward or outward, and you feel a pop.
Exercise changes how often and how aggressively those pressure shifts happen. Unlike sitting on a descending airplane, where the external air pressure steadily rises, a workout can hit your ears with multiple pressure sources at once: internal pressure from straining, vascular pressure from increased blood flow, and mechanical stress from clenching your teeth. Each of these deserves its own explanation, because the fix for each one is a bit different.
Breath-Holding and the Valsalva Effect
If you have ever instinctively held your breath during a heavy squat or deadlift, you have performed what is known as a Valsalva maneuver. You close your glottis (the opening at the back of the throat), brace your core, and push against a sealed airway. This briefly spikes the pressure inside your chest and abdomen, which is why lifters use it to stabilize the spine under heavy loads. The problem is that the same pressure spike travels up through the Eustachian tube and into the middle ear.
A study comparing heavy weight lifters to lighter-load lifters found that the heavy group reported ear-related symptoms at far higher rates. Roughly two-thirds of the heavy lifters experienced a blocking sensation in their ears, compared to a quarter of the lighter group. Tinnitus (ringing) was reported by about 70 percent of heavy lifters versus 35 percent of lighter lifters, and temporary shifts in hearing threshold showed a similar split.2PubMed Central. Effect of Valsalva Maneuver by Heavy Weight Lifters on Ear and Its Attributes Vertigo and headache followed the same pattern, with heavy lifters reporting both at roughly double the rate. These are not subtle differences, and they point directly to the pressure spike caused by bearing down against a closed airway.
The occasional pop during a set of squats is not the same as the chronic blocking and tinnitus those lifters described. But the mechanism is on the same spectrum. Any time you hold your breath and strain, you are driving middle ear pressure above its resting level. If the Eustachian tube does not vent fast enough when you release the breath, the pressure difference across your eardrum produces a pop. Repeated heavy Valsalva maneuvers over months or years raise the risk of more persistent symptoms.
Blood Flow and Vascular Changes
Even without breath-holding, hard exercise reroutes a lot of blood. Your heart rate climbs, blood vessels dilate in working muscles, and overall blood pressure rises. The tissues lining the Eustachian tube and the middle ear cavity have their own blood supply, and when blood flow increases to the head and neck, those tissues can swell slightly. A swollen Eustachian tube lining means a narrower opening, and a narrower opening means pressure equalizes more slowly.
This effect tends to be most noticeable during exercises that put your head below your heart. Inversions in yoga, decline bench pressing, or even tying your shoes between sets can temporarily increase venous pressure in the head. That vascular engorgement can make the tube lining puffy enough to impair its normal opening-and-closing cycle. The result is a stuffy or full feeling in one or both ears, sometimes followed by a pop when you stand upright again and the blood drains away.
High-intensity cardio can produce a milder version of the same thing. Sprinting, rowing, or pushing hard on a bike sends blood pressure up sharply, and some people notice their ears feel different during peak effort even though they are not holding their breath. The sensation usually resolves within a few minutes of cooling down, which is a good sign that the cause is transient vascular congestion rather than anything structural.
Jaw Tension and the TMJ Connection
People clench their jaws more than they realize during hard effort. Gritting your teeth through the last few reps of a bench press or clamping down on a mouthguard during a conditioning circuit puts sustained force through the temporomandibular joint, the hinge that connects your lower jaw to your skull. That joint sits just a few millimeters in front of the ear canal, and the muscles that move it overlap with the muscles that help open the Eustachian tube.
Research has found that symptoms of Eustachian tube dysfunction are highly prevalent among people with temporomandibular joint disorders. It remains unclear whether the jaw problem is actually causing the tube to malfunction or whether the two conditions simply produce similar sensations of ear fullness and pressure.3PubMed. The prevalence of eustachian tube dysfunction symptoms in temporomandibular joint disorder patients Either way, the overlap matters for anyone whose ears consistently pop during exercises that involve heavy jaw clenching. If relaxing the jaw during a lift reduces the ear symptoms, the connection is probably mechanical. Loosening the jaw, breathing through an open mouth, and avoiding mouthguards you do not strictly need are easy things to test.
Cerebrospinal Fluid and Inner Ear Pressure
The middle ear is not the only pressure-sensitive compartment in the area. The inner ear, which handles both hearing and balance, is filled with fluid. That fluid communicates with the cerebrospinal fluid that bathes the brain and spinal cord through a tiny channel called the cochlear aqueduct. When that channel is open, the pressure of the cerebrospinal fluid essentially sets the baseline pressure for the inner ear’s fluid.4PubMed. Cochlear and cerebrospinal fluid pressure: their inter-relationship and control mechanisms
Why does this matter during exercise? Anything that raises intracranial pressure, including straining, breath-holding, or rapid changes in body position, can nudge cerebrospinal fluid pressure upward. If that pressure shifts fast enough, the inner ear fluid pressure follows, and the delicate membranes inside the ear feel the difference. This is a subtler mechanism than a straightforward middle ear pop, and it may explain why some people experience not just popping but a brief wave of dizziness or muffled hearing after a heavy set. The sensation usually passes once intracranial pressure normalizes, but repeated large spikes are worth paying attention to.
Which Exercises Cause the Most Popping
Not all workouts are equal when it comes to ear pressure. The exercises most likely to trigger popping share one or more of these traits: they encourage breath-holding, they raise blood pressure sharply, or they place your head below your heart.
- Heavy compound lifts: Squats, deadlifts, and overhead presses are the biggest offenders because they involve maximal effort, bracing, and often a Valsalva maneuver.
- Inverted positions: Handstands, headstands, decline bench work, and certain yoga poses increase venous pressure in the head and can make the Eustachian tube lining swell.
- High-intensity intervals: Sprint repeats, rowing intervals, and Assault Bike efforts spike heart rate and blood pressure simultaneously.
- Contact or high-effort sports: Boxing drills, wrestling, and other activities that combine jaw clenching with intense exertion combine multiple triggers at once.
Lower-intensity steady-state cardio like walking, easy cycling, or swimming at a relaxed pace rarely causes noticeable ear popping in people with normal Eustachian tube function. If your ears pop during gentle exercise, the cause is more likely pre-existing congestion from allergies or a cold, or an underlying issue with how the tube opens and closes.
Reducing Ear Popping During Workouts
Since the main drivers are breath-holding, blood pressure spikes, and jaw tension, practical fixes target those three things.
The simplest change is breathing technique. Instead of sealing your glottis and holding your breath for the entire rep, try exhaling against pursed lips during the hardest part of the lift. You still get some core bracing, but the partial exhale bleeds off the pressure that would otherwise spike in your middle ear. Some lifters find that using a lifting belt allows them to maintain trunk stability with less extreme breath-holding, which can indirectly reduce ear symptoms.
Swallowing or gently yawning between sets can help the Eustachian tube vent any built-up pressure. This works on the same principle as chewing gum on a plane. If you feel a blockage mid-set, pinching your nose and gently blowing, a controlled mini-Valsalva in reverse, can pop the ears intentionally. The key word is gently; forcefully blowing against a pinched nose when your intrathoracic pressure is already high can make things worse.
Staying hydrated helps keep mucosal linings thin. Dehydration thickens mucus and can make the Eustachian tube lining tackier, which slows its opening. If you work out in a dry gym or in cold weather, this effect is more pronounced. A nasal saline spray before a session can also help if you are prone to mild congestion that narrows the tube.
For the jaw tension component, consciously unclenching your teeth between reps, or even resting your tongue lightly on the roof of your mouth instead of biting down, can reduce the mechanical pressure on the area around the Eustachian tube. Some people find that simply being aware of the clenching is enough to reduce it significantly.
When Popping Suggests Something Else Is Going On
Occasional popping during heavy lifts is common and usually harmless. The ears equalize, the feeling passes, and you move on. But there are patterns worth taking more seriously.
If the popping is accompanied by pain, persistent muffled hearing that does not clear within a few minutes, discharge from the ear, or repeated dizziness, those are signs that the pressure changes may be exceeding what your ear can safely handle. The same study of heavy weight lifters that found high rates of blocking sensation and tinnitus also noted that a majority reported vertigo, suggesting that the inner ear’s balance apparatus is affected alongside hearing.2PubMed Central. Effect of Valsalva Maneuver by Heavy Weight Lifters on Ear and Its Attributes That combination of hearing changes and balance disturbance deserves a visit to a doctor, ideally one who specializes in ear problems.
People who already have Eustachian tube dysfunction, whether from chronic allergies, sinus issues, or anatomical variation, may experience more frequent and more bothersome popping during exercise than the general population. Eustachian tube dysfunction is typically classified into three subtypes: an obstructive form where the tube stays too closed, a patulous form where it stays too open, and a form triggered specifically by pressure challenges like altitude changes or exertion.5eLABa (Vilnius University). Eustachian tube dysfunction: pathophysiology, diagnostics and treatment modalities. a literature review If you consistently have trouble equalizing during workouts despite adjusting your breathing and jaw habits, the baro-challenge subtype may be relevant, and a hearing specialist can assess how well your tube functions under pressure with a simple test called tympanometry.
Altitude, Diving, and Lessons for the Gym
Research on pressure-related ear stress comes largely from diving and aviation medicine, and some of those findings translate directly to the gym. A study of freedivers found that pressure-related changes to the eardrum were detected in nearly half of all ears examined after repeated sessions, and the damage tended to be more severe in less experienced divers who had not yet learned to equalize effectively.6PubMed Central. Effects of freediving on middle ear and eustachian tube function The parallel to a novice lifter who holds their breath excessively on every rep is striking. In both cases, a relatively small amount of education about pressure management, learning to exhale at the right time, practicing controlled equalization, and gradually increasing exposure, can prevent the bulk of the damage.
Divers also learn to avoid diving while congested, because a swollen Eustachian tube lining makes equalization much harder and raises the risk of a middle ear squeeze. The same logic applies to the gym: if you are dealing with a head cold, sinus infection, or a bad allergy day, your ears will be less tolerant of pressure spikes. Backing off the intensity or skipping the heavy compound lifts on those days is not overcautious; it is the same precaution any experienced diver would take.
Ears That Pop Only on One Side
Some people notice that popping or fullness consistently affects one ear more than the other. This asymmetry is not unusual. The two Eustachian tubes do not always function identically; differences in anatomy, past infections, scar tissue, or even slight deviations in the nasal septum can make one tube more sluggish than its partner. If the asymmetry is mild and the symptoms resolve between sets, it is generally nothing to worry about. If one ear stays blocked or hurts while the other feels fine, the slower tube may have a mechanical issue worth investigating, especially if it coincides with a history of ear infections on that side.
Jaw alignment can also play a role in one-sided symptoms. If you tend to clench harder on one side, or if you have a slight bite imbalance, the mechanical forces around the Eustachian tube will differ between left and right. People who grind their teeth at night sometimes notice more ear popping on the same side where they have jaw pain or tension headaches. Addressing the jaw issue, whether through a night guard, physical therapy, or simply relaxing the jaw during exercise, can sometimes resolve the ear problem on that side without any direct treatment to the ear itself.