There is no clinical argument that the day of ovulation is suitable for the birth of a son, and those who have the need for fertility can increase the number of coitus during the ovulation period appropriately. The sex of the fetus is mainly determined by the sex chromosomes, and has nothing to do with the time of coitus during ovulation, diet and other factors, so there is no clinical theory that the first day of ovulation is suitable for the birth of a son. For couples who need to get pregnant, you can increase the number of times you have sex during the ovulation period to increase your chances of getting pregnant. Enhance personal hygiene care during coitus to prevent infections. It is worth noting that couples should avoid increasing the chances of having a son through traditional remedies or other unscientific methods, in order to prevent affecting the health of the body or causing abnormal development of the fetus. During pregnancy, couples should also avoid testing the sex of the fetus through unorthodox means, which may easily affect the health of the mother and the fetus. It is recommended that both husband and wife set up the correct concept of having a child, and should also adjust their mindset to avoid excessive tension, anxiety and so on.