The condition of having two bowel movements per day, each about half an hour apart, may be normal or it may be caused by abnormalities such as inflammation of the intestines.
First of all, some people will have twice daily bowel movements. It is possible that after the first bowel movement, there is an accumulation of stool in the abdomen after the movement, and then it will be discharged again. If you have two regular bowel movements every morning, with regular intervals between them, and no nausea, abdominal pain or other discomfort, this is normal.
On the other hand, if the stools are not formed twice a day, and there are frequent abdominal pain and other symptoms, it is likely to be caused by inflammation of the intestinal tract. You need to go to the hospital in time for treatment.