Many young couples are preparing for the birth of a baby. However, the delicate sperm will always let the couple hurt their brains, the temperature is too high, can not breathe, not even cell phone radiation will hurt it. Expectant fathers want to make his wife successfully pregnant, 3 months in advance, you have to start taking care of sperm. 1, to have a good lifestyle. Smoking and alcoholism are the worst enemies of sperm. If an adult male smokes 30 cigarettes a day, the survival rate of sperm is only 40%. Alcoholism can lead to chromosomal abnormalities in sperm, resulting in malformed or stunted fetuses. As the process of sperm growth requires low temperature. Therefore, fathers-to-be should stay away from hot environments such as saunas. Breathless tight pants will also affect testicular heat dissipation and reduce sperm count. 2. Maintain a good mood. Emotional instability can directly affect the nervous system and endocrine function. For men, it will make the testicular spermatogenesis dysfunction. If the pressure is too great, you can exercise for 30-45 minutes every day. However, it should be noted that exercise should not cause fatigue. 3, away from radioactive substances, heavy metals, automobile exhaust and pesticides. In addition, people in the cold climate, plateau lack of oxygen or toxic environment, due to the body does not adapt, the function of the endocrine is bound to be affected, but also will make the sperm quantity reduced, the quality of decline. For fathers-to-be who are preparing to get pregnant, they should avoid renovating their houses six months before pregnancy. If work keeps you away from the computer, then focus on your diet. Men should consume more vegetables, fruits and seafood and take regular supplements such as animal liver. Foods that should be eaten more often are eel, eel, sea cucumber, cuttlefish; followed by yam, ginkgo, frozen tofu, tofu skin and so on. These foods contain high lysine, which is a necessary component of sperm formation. In addition, the lack of zinc in the body can also reduce libido, sperm reduction.