It is normal to have two bowel movements a day, as long as the stool is normal in nature and color, it is completely normal, such as the discharge of brown formed soft stool or dark brown formed stool, are normal. In addition, if the above-mentioned stool properties and color are normal, even if the stool is passed three times a day, it is normal, so do not be nervous, and some people may pass stool only once every other day, which is also normal. When there is a change in the nature of the stool, such as paste-like stool, thin watery stool, consider the presence of diarrhea, and often more than five times a day. When the stool is dry, which is like sheep stool, this is a sign of constipation. If the stool is black or bloody, it is considered to have gastrointestinal bleeding, and the black or bloody stool is often accompanied by an obvious bloody odor, which requires prompt medical attention.