Most foods can be divided into alkaline and acidic categories. Some people think that the acidity and alkalinity of food has something to do with having boys and girls. I added 123 to Dr. V Song's pinyin, where boys have conditioned reflex. Women's vaginas are generally acidic. If alkaline substances are secreted during orgasm, it is more suitable for Y sperm to survive, and the chances of having boys are higher. If pregnant couples really want to have boys, then in order to increase the chances of having boys, women should eat more alkaline foods, while men should eat more acidic foods to increase the chances of successful fertilization and the combination of Y sperm and eggs.