The ovulation period is a critical period in female physiology. During this period, the female ovaries will release a large number of eggs, and the body will also secrete a lot of fluid. These fluids include sweat, mucus, blood, and saliva, which together constitute the unique physiological phenomena of ovulation.

Mucus is a clear fluid secreted by the body, usually found in a woman's nose and throat, and helps protect her respiratory tract and mouth. During ovulation, mucus secretion increases as it helps keep a woman's respiratory tract and mouth clean while also preventing the invasion of bacteria and viruses.

Blood is one of the most precious fluids in the body, containing various nutrients and waste products required by the body. During ovulation, a woman's blood will contain a large number of eggs, because the eggs need to be expelled from the ovaries and need to be transported through the blood. Therefore, during ovulation, a woman’s body needs a large amount of blood to support the release of eggs.

Saliva is another important fluid in the body that contains various enzymes and bacteria. During ovulation, women also produce more saliva because it helps digest food and avoids the invasion of bacteria and viruses.