What causes excessive burping when i wake up in the morning? it is not accompanied with heartburn. just burps.

Burping champ: Involuntary belching after a meal is normal, caused by release of swallowed gas after distension of the stomach with food. Magenblase syndrome is postprandial epigastric fullness ; bloating, relieved by belching.Aerophagia (accumulation of gas due to air swallowing) is common with anxiety, hypersalivation from gum chewing, smoking, drinking, oral irritation. In some, belching can become habitual.