Burping while exercising is not an uncommon disorder. It is common to experience burping during training sessions if you exercise often.
While researchers can not find a single cause for this commonly shared trait, they have identified several possible culprits.
Uncontrollable reasons why you burp
Burping while running is not a completely controllable phenomenon. Some natural changes take place in your body while exercising that promote burps. Being aware of them can help you relax – so if you burp while exercising, it does not have to be a severe medical condition.
Exercise pulls blood flow away from the stomach, which can inhibit digestion. When this happens, essential hormones increase production to move food through the intestinal tract faster than expected and help produce gas. Finally, rubbing in the abdomen during exercise can also make gas, which can cause burping.
Swallows too much air
The American Lung Association states that there are two ways to breathe: through the nose and the mouth. Breathing through your mouth happens more during exercise, and therefore it is not uncommon to swallow the air that makes you burp. Ingestion of air is so common that it even has a scientific name: aerophagia.
The amount of water competes closely with the amount of air ingested in the stomach for many people. Taking air into the esophagus while running is not uncommon. Even more common is to swallow air while drinking.
Fluid intake while exercising creates a perfect storm for burping. If you want to exert yourself not to swallow air, use a mouth guard to limit how much you can open your mouth to swallow air.
High fiber and lactose intolerance
For the lactose intolerant population, lactose causes gastric gas in dairy products, which is then scraped up during strenuous activity.
Food is the second most important cause of burping while exercising. High-fiber foods, beans, fructose, and sucrose found in sweets and sodas can also contribute to excessive burping while exercising.
GERD and Silent Acid Reflux
Here are two terms you can link to your belching: GERD and silent acid reflux. The fancy name of GERD is gastroesophageal reflux disease, where a muscle at the end of the esophagus does not close entirely, and the stomach contents can push up the throat.
Silent acid reflux is much the same but differs in that the mucus that feeds most of our throats is lacking in some people. Both conditions cause increased swallowing, which in turn can cause excessive burping. When you run too early after eating, acid can be thrown up your throat again.
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