Having intercourse on 2 consecutive days during ovulation can have an effect on the quality of sperm. If you want to improve the quality of sperm, you can have intercourse on alternate days during ovulation. Because the viability of sperm is 24 hours, having intercourse on alternate days can ensure the viability of sperm. In addition, the quality of sperm can be ensured and having intercourse on alternate days will also increase the chances of conception without making both men and women feel physically exhausted. Therefore, it is important to make good physical adjustments during the preparation period and to have intercourse on alternate days during ovulation. During the preparation period, both men and women should undergo health check-ups, and the male partner should stop smoking and drinking and avoid staying up late. During pregnancy preparation, women should take oral folic acid in advance to prevent the occurrence of fetal neurospinal malformation.