How many times of sex can a woman endure in one night? (Sexual knowledge adult novel)

Whether frequent sexual intercourse for women affects their health is a question that everyone is concerned about. Women generally go through the following stages during sexual intercourse:
First, under the influence of caressing to stimulate self-sexual fantasies, the body shows an excited reaction (sexual arousal), with rapid breathing, accelerated heart rate (increased by more than 10 times/minute), flushed face, and high spirits; the breasts feel swollen, the nipples swell and protrude due to congestion, and there is a slight pleasure when they touch; the vulva secretes a small amount of fluid, and the lower vagina occasionally has reflex muscle contractions and obvious pleasure. After the penis is inserted, the body becomes further excited under the stimulation of the penis twitching, the pelvic cavity becomes noticeably congested, and the muscles in the lower vagina contract, tightly wrapping the penis (plateau phase), making the stimulation of the penis more obvious and giving a stronger sense of pleasure.
Based on the plateau period, it takes about five to ten minutes (or longer or shorter) to reach orgasm, which is manifested by reddening of the head, face and skin of the whole body, lightly closed eyes, happy expression, rapid breathing or accompanied by moaning, heart rate exceeding 100 beats/minute, erect breasts, further enlarged and protruding nipples, bulging of the labia majora and everting outward on both sides, dark red congestion of the labia minora and protruding outward, thickening and elongation of the clitoris and showing an erection, pulling up to the pubic symphysis, and secretion of a large amount of thin, transparent fluid from the vulva. The most fundamental feature is the involuntary, powerful, rhythmic contraction of the lower vaginal sphincter, pelvic floor muscles and skeletal muscles throughout the body. The warm and powerful pleasure spreads throughout the body. The mind naturally stagnates, and all consciousness is immersed in the intense pleasure and extreme happiness of orgasm.
Finally, there is the resolution phase, during which the rhythmic muscle twitching during orgasm lasts for about 5 to 30 seconds and then gradually stops naturally. The body's sexual responses, such as pelvic congestion, will gradually subside within 20 to 30 minutes, and the body will return to its normal state.
In the above process, multiple sexual intercourse may have the following effects on physical health:
1. The impact of multiple insertions of the penis into the vagina on women's health. The insertion and movement of the penis into the vagina is a mechanical stimulation to the vagina and may also introduce bacteria into the vagina. The vagina is composed of stratified squamous epithelium, which has strong resistance to friction. If there is no pain when friction is stimulated, there will be no problem even if you have frequent sexual intercourse and the duration is long. Some women experience noticeable pain when the penis is inserted. This may be related to insufficient preparation for caressing, too little fluid at the vaginal opening, or a clear fear of sexual intercourse that causes excessive spasm of the lower vaginal muscles. It may also be that there is an inflammatory response to a vaginal infection that causes pain when the penis is inserted.
During multiple sexual intercourses, if the penis or female vulva is not clean when the penis is inserted, some bacteria may be brought into the vagina, increasing the chance of vaginal infection. However, lactobacillus grows naturally 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 most bacteria cannot survive in such an acidic environment. Therefore, the vagina has a certain ability to resist infection. When the body's immunity is normal, even multiple sexual intercourses in a short period of time will not lead to vaginal infection.
2. The impact of multiple orgasms on women’s health. Orgasm is a human instinct that has developed through long-term biological evolution. The human body is naturally capable of initiating and sustaining an orgasmic response. Therefore, orgasm response is not harmful to women's health. Modern sex science research results show that orgasm can improve the body's functional state and is beneficial to physical and mental health.