As the saying goes, men come from Mars and women come from Venus, men and women are physically and psychologically very different, and sometimes it is difficult to understand each other, leading to misunderstandings. In order to make the love life between couples and couples more harmonious, in fact, both men and women need to understand each other's physiological common sense. Let's discuss the common sense of andrology that women should know. 1. Do men bleed during their first sex? Women have hymen, hymen are easy to rupture for other reasons, women do not bleed during their first sex, but the probability of bleeding during their first sex is high. What about the man? Males certainly do not have a corresponding hymenist. Because the structure of the reproductive organs is significantly different from that of women, there is no need to protect similar membranes. However, the first time of life in men is stressful or foreskin injury, there is a possibility of bleeding. 2. Is it...