Beverages are potable drinks which have thirst-quenching, refreshing, stimulating and nourishing qualities. By refreshing, one means the replenishment of fluid loss from the body due to perspiration. Simulation results in increase of the heart beat and blood pressure. This is due to the intake of spirits (alcohol) or tea (thein) and coffee (coffein). Nourishment is provided by the nutrients in the beverages, especially fruit juices. Most of the beverages supply energy in the form of sugar or
alcohol. They also provide other nutrients like mineral salts and vitamins. For example, milk gives calcium and citrus fruits give vitamin C.
Generally, people drink for one or more of six reasons; to quench thirst, to get drunk, to enjoy a social setting (social drinking), to enjoy the taste of the beverage, to feed an addiction (alcoholism), or as part of a religious or traditional ceremony or custom (proposing toast).