Chinese article titled "Sperm survival time during ovulation":

The lifespan of sperm is determined by many factors, including temperature, oxygen supply, nutrition, etc. In the female body, sperm needs to maintain a suitable environment to survive. Generally speaking, the survival temperature of sperm is around 37°C, and the temperature in a woman’s body will change with time. During ovulation, a woman's body temperature will rise to around 37°C, which provides a better environment for sperm to survive.

In addition, the nutrients in the female body will also have an impact on the life span of sperm. During the ovulation period, a woman's egg needs to be released, and during this process, the woman needs to supplement enough nutrients to maintain the survival of the sperm.

Although the lifespan of sperm is only a few hours in the female body, during the ovulation period, the survival time of sperm can be extended to days or even weeks. Therefore, having sexual intercourse during the ovulation period can improve the quality of sperm and increase the rate of sperm-egg integration, thereby increasing fertility.