Before you start worrying about constipation, be sure you really have it. A bowel movement every 2 or even 3 days may be normal for you.
You can do a lot to keep your movements regular by drinking enough fluids and eating enough roughage to give the feces bulk, which allows them to pass easily, and by exercising daily. An adult should drink 2 quarts of liquids (water, juice, or milk) daily. For roughage, eat bran cereals, whole grain breads, leafy vegetables, and fresh and dried fruits. Sprinkle bran flakes on salads or fruits. Use such lubricants as cooking or salad oil in foods. Walking, jogging, swimming and other exercise stimulate the bowel muscle. Avoid laxatives and enemas; they will worsen the problem.
Nervous tension can cause constipation. If you believe this is your problem, or you are constipated for more than 2 weeks, consult your doctor. Chronic constipation can be a symptom of a serious condition.