Ovulation refers to the period in a woman’s menstrual cycle when her ovaries secrete the most eggs. During this time, a woman's immune system will undergo changes and she will also experience a series of physical and psychological reactions. So, why do women experience these changes and reactions during ovulation?

Secondly, women will experience a series of physiological reactions during ovulation, such as increased vaginal secretion, uterine contraction, breast development, etc. These reactions usually resolve after sex, but they are important for a woman's health and well-being.

Finally, women also experience a series of psychological reactions during ovulation, such as anxiety, tension, excitement, etc. These reactions can affect a woman's mental health, but they are also an important source of happiness and contentment for women during their cycle.

To sum up, women will undergo a series of physiological and psychological changes during ovulation. These changes and reactions are very important to women's health and happiness. Therefore, if women want to live a healthy and happy life, they should adapt as much as possible to the changes in their cycle.