Among the males tested, the number of sperm in their bodies is approximately 3.98 billion for those who are stuck with their fixed sexual partners overnight; Men who only spend about 5% of their time with a fixed sexual partner have a sperm count of 7.12 billion, almost double that.
In addition, the number of sperm in men who only engage in sexual activity with a fixed partner is significantly lower than that of men who enjoy tasting fresh food. This group of researchers stated that men produce two types of sperm, one of which is intended to fertilize an egg. They will continue to charge forward throughout their short lives until they find an unfertilized egg. Another purpose is to defeat sperm from other men. The situation where the number of sperm changes is called "sperm competitiveness"; Men subconsciously expect that 'sex' can be varied and diverse. So the less contact and shallower understanding one has with a sexual partner, the more it can stimulate male sexual desire. When external stimuli affect sexual psychology and stimulate male sexual desire, the number of sperm will also increase. This study also focused on other primates, such as apes and apes, and the results were similar.
One of the researchers said: "This study reflects that monogamy is against human nature. That's why spending a long time with a fixed partner can lead to a decrease in sperm count. However, this research result has also been questioned by many experts, who believe that it only gives men an excuse to "eat wild" and can lead to the spread of sexual diseases. So these experts suggest that if you want your partner to avoid flirting outside and have a high regard for your sexuality, it's best for women to maintain their freshness and come up with small tricks and surprises from time to time in order to truly have a happy sex life.