What do husbands need to do to prepare for eugenics?

　　The quantity and quality of sperm is the key factor for eugenics for fathers-to-be, and thus sperm is called the essence of eugenics. Therefore, fathers-to-be should try to exclude any factors that affect the quality of sperm and actively create any conditions that are favorable for eugenics. To prepare for a healthy baby before conception.　　1.Treat reproductive system diseases promptly 2.Be abstinent in sex 3.Be wary of drugs and contact with female beauty products 4.Stay away from harmful chemicals 5.Be careful of noise 6.Hot baths should not be too frequent