The impact of repeated sexual intercourse on women’s health

　　1. Penis inserted into vagina multiple times female healthy influence. The penis is inserted into the vagina and twitches, which is a mechanical stimulation to the vagina and may introduce bacteria into the vagina. The vagina is composed of stratified squamous epithelium and has strong friction resistance. If there is no pain when stimulated by friction, even if you have sexual intercourse frequently.

　　There is no problem if sexual intercourse lasts for a long time. Some women experience obvious pain when inserting their penis. This may be related to insufficient preparation for caressing, too little fluid in the vaginal opening, or an obvious fear of sexual intercourse that causes excessive spasm of the lower vaginal muscles. There may also be an inherent inflammatory response to vaginal infection that causes pain during penis insertion.

　　If the penis or female vulva is not clean during multiple sexual intercourses, some bacteria may be introduced into the vagina, increasing the chance of vaginal infection. However, lactobacilli naturally grow in the female vagina and can produce lactic acid to regulate the acidity in the vagina. Under normal circumstances, the Ph value is maintained at around 4.5, and ordinary bacteria cannot survive in such an acidic environment. Therefore, the vagina has a certain ability to resist infection. If the body's immunity is normal, even multiple sexual intercourses in a short period of time will not cause vaginal infection.