First, pay attention to the temperature of the testicles: the scrotum contracts and stretches with the change of the external temperature as a way to regulate the temperature inside the scrotum, so that the temperature inside the scrotum is kept at about 32-33 degrees. This temperature is the best temperature for the testicles to produce sperm. When suffering from cryptorchidism and varicocele, the temperature of the testicles increases, which affects the sperm production function. In daily life, do not take baths, hot baths or saunas with too hot water to avoid overheating the testicles. Do not wear tight triangular shorts either. Second, avoid alcohol abuse: long-term heavy drinking can damage the reproductive system, endocrine function, so that testicular atrophy, testosterone more sperm function decline, fertility is reduced. Third, reduce ionizing radiation: long-term exposure to ionizing radiation can harm spermatogenic cells, causing male infertility. Fourth, increase nutritional intake: diet should be more calcium, magnesium, zinc food, such as fish, liver, eggs, more vitamin-rich food, such as carrots, spinach, etc. Five, choose the best period of sexual intercourse: women after ovulation, the basal body temperature will rise, so you can estimate whether it is ovulation by measuring the temperature of the body. Sperm can survive in a woman’s vagina for 3-4 days, so having intercourse before the body temperature rises will help you get pregnant. 6: Intercourse position: It is best to elevate the woman’s hips, which allows semen to accumulate deep in the vagina around the cervix.