Chills in the middle of the night during ovulation are a relatively common symptom that usually occurs during a woman’s menstrual cycle. Ovulation period refers to the number of days from the first day of a woman's last menstrual period to the beginning of the next menstrual period. For some women, having chills in the middle of the night during ovulation can be a bother.

So why do some women get chills in the middle of the night during ovulation? This may have something to do with a woman's immune system. During ovulation, a woman's immune system may become more active and respond more to the surrounding temperature. In addition, some women may experience mood swings during ovulation, which may also affect their body temperature and body sensations.

Although having chills in the middle of the night during ovulation may have a certain impact on a woman's daily life, it is not a serious illness. If women experience severe chills in the middle of the night during ovulation, it is recommended that they consult a doctor for professional advice and treatment.

In short, chills in the middle of the night during ovulation are a relatively common symptom and usually do not have much impact on physical health. But some women may feel cold and uncomfortable during this period. If women feel that this condition is serious, it is recommended that they consult a doctor for professional advice and treatment.