It is true that during pregnancy, a woman needs to provide nourishment for both herself and the developing fetus. However, this does not mean she needs to consume food for two full-grown adults. A pregnant woman of normal weight requires an additional 300 kilocalories per day (equivalent to three small cups of yogurt or three apples). In the case of a twin pregnancy, the recommended increase is 600 kilocalories per day. For individuals with extreme obesity, extreme thinness, or underlying health conditions, dietary counseling is necessary to ensure appropriate weight gain and to optimize pregnancy outcomes.