aerophagia

Chronic burping is caused by constant, unconscious air swallowing, often from anxiety (hyperventilating increases the amount of air we swallow, thereby increasing gas).

With your mouth closed, inhale slowly through your nose (expanding your abdomen--not your chest), then slowly exhale through your mouth (this helps to prevent air swallowing and hyperventilation and seeks to stimulate the vagus nerve to pass gastric contents "downstream").

Keep Air Swallowing To A Minimum -- The more air your baby swallows, the greater the chances of spitting up.

A main cause of gas build-up is aerophagia, or air swallowing, due to rapid gulping of foods and liquids, gum-chewing, and even loose-fitting dentures.

This habit can be broken if the person becomes aware of the air swallowing.