Constipation is an issue when one struggles to empty out ones bowel naturally, as the bowel matter is impacted, hard to move and fails to empty out regularly. Stressing and straining the bowel walls can only lead to hernias, piles, bloatedness, auto-toxicity and other uncomfortable bowel disorders Also if you are fasting, you will need to think of bowel cleansing foods afterwards to release any impacted, left behind bowel matter.
Everyone can suffer from constipation at some stage of their dietary intake, but generally the cause comes from not drinking enough fluids and eating too many hydrated foods, like dried fruit, preserved meats. Too many carbohydrates like white bread, potatoes and nut bars. The main article on the website has a long list that helps to prevent constipation and recipes to relieve the problem.