The vigor of sperm is higher when you have intercourse once in 3~5 days. Sperm is continuously generated. During intercourse, most of the mature sperm will be discharged from the body, and after about 3~5 days, a batch of sperm with better vigor will be generated. For couples preparing for pregnancy, it is also recommended to have sex once every 3~5 days, and it is best to arrange for intercourse during the ovulation period, when the vitality of the sperm is higher, and the chances of getting pregnant are greater. To prevent poor sperm quality you should do more exercise, avoid sitting for a long time, avoid the temperature of the testicular area to rise, usually eat more high quality protein food and food containing zinc, to promote the production of sperm.