what is belching
Belching is the act of expelling air from the stomach through the mouth. It usually occurs when the stomach distends (expands) due to too much swallowed air, with the belching releasing the air to reduce the distention. Other names for belching include burping and eructation.elf-Treatment. If you are belching excessively or if your stomach is distended and you cannot expel the air, lying on your side usually helps. Adopting a knees-to-chest position can also be helpful. Hold the position until the gas passes.