An abdominal breathing trainer is a therapeutic device designed to guide patients in performing diaphragmatic (deep abdominal) breathing exercises. It helps promote proper diaphragm movement and controlled breathing patterns instead of shallow chest breathing. Regular use can help relax abdominal muscles, improve oxygen exchange, and stimulate the parasympathetic nervous system, which supports normal gastrointestinal motility and digestive function. It is commonly used in the management of conditions such as Irritable Bowel Syndrome (IBS), bloating, and functional digestive disorders.