Constipation is having less than 3 bowel movements a week. Occasional constipation is very common, some even chronic constipation interferes with their life such as not being able to go on with their daily activities. Some people can develop Chronic constipation, which is having infrequent bowel movements or difficult passage of stools that goes on for a longer period of time, in most cases even weeks. Chronic constipation is harmful because of the difficulty that is associated with it and uncomfortable way it can interfere in your life. Aside from this, it may also cause excessive straining and other signs and symptoms.