Melanie has chronic constipation. Which of the following recommendations is NOT an effective way of alleviating constipation?

Melanie has chronic constipation. Which of the following recommendations is NOT an effective way of alleviating constipation?

Eating more high-fiber foods, including whole grain breads and cereals

Following the same routine each day for having a bowel movement

Increasing water intake 

Ignoring normal urges to defecate, which "trains" the bowel to eliminate feces when it is most convenient