Other side effects of fasting, such as a feeling of weakness, palpitation of the heart, and drowsiness late in the afternoon, usually minor, disappear with a little rest. If the person who wants to improve his diet by cutting out meat, highly seasoned gravy, rich cake, and sugary preserves goes on a fast, he hurries the process of changing. After eating heavily of these foods for sometime he cannot immediately enjoy a plain wholesome diet. His taste is so perverted that he cannot enjoy good fruit, whole-grain bread, and vegetables. Such a fast proves more benefit than medicine, for the abused stomach finds the rest it has long needed.
Genuine hunger can be satisfied with a plain nutritious diet.
For spiritual uplift, try a fast. You will find that it draws you closer to the Creator in prayer. It makes your character stronger by the self-discipline and humble experience of denying yourself food. The double benefit is your feeling of well being, with a clearer eye, sharper brain, springier step, and greater efficiency for your work. A bit of starvation can give you that eagerness in a hurry.