Nutrition refers to the study of how food nourishes the body. People tend to be fascinated by the topic of food, whether they are concerned about eating well or interested in cooking. There is rarely any escape from thoughts of food since everybody feels hunger several times each day and then plans for the next snack or meal are made. Food selection depends on personal tastes and so the choice of meal may be individually determined. When presented with the restaurant menu on an evening out, the choice of meal is rarely made immediately and individuals may be quickly swayed by the choices of their companions.