Defecation in the morning can prevent damage to the intestinal tract from toxins in the stool, avoid dry stool, increase intestinal reflexes, and prevent constipation. When you wake up in the morning, the human intestines are in a state of hyperactivity, especially the colon and rectum, which will expel the waste from the intestines through rapid peristalsis, so many people will have a bowel movement in the morning. Frequent morning bowel movements can prevent the prolonged retention of feces in the intestinal tract and reduce the toxins in food residues that can damage the intestinal system. The longer the stool stays in the intestine, the drier it becomes, thus creating a vicious cycle and even inducing constipation. Defecation every morning can exercise the reflexes of the intestines, which will help improve the function of the intestines and reduce the likelihood of constipation in the long run. On the contrary, frequent suppression of bowel movements will lead to a decrease in rectal sensing ability, making it easier to suffer from constipation.