As long as you have not used drugs that affect the quality of sperm and eggs, or if you have not been drinking or smoking, having intercourse in good health is the best time for sperm and eggs to unite and form a fertilized egg, so it is recommended that if you plan to get pregnant, you should first strengthen your nutrition in your diet to increase your body’s resistance and make a balanced nutrition. The quality of sperm and eggs will be relatively good, which will be conducive to eugenics. In addition, before planning to get pregnant, it is recommended to stop smoking and drinking, and also to take oral folic acid tablets to prevent fetal neural tube abnormalities, and it is also recommended to have a health checkup, and if any unhealthy conditions or diseases are found, it is recommended to actively treat them and consider getting pregnant after the diseases are cured. This is the best time for sperm and egg to unite.