If you have bad sleep for a long time, it will affect your menstruation. Menstruation is mainly an endocrine adjustment, and bad sleep for a long time has an effect on women’s endocrine and also affects the secretion function of the ovaries, so it may lead to irregular menstruation. If it is only 1-2 times bad sleep, it will not have much effect on menstruation. Women’s menstruation is mainly affected by the regulation of the ovarian secretion of estrogen and progesterone cycle. When the body condition is relatively stable and the ovarian function is normal, the fluctuation of menstruation is not big, and the delay time before and after is usually 2-3 days. However, when the health condition is not good, the nutrition is not good, and the emotion is particularly unstable, the menstruation will be affected. Therefore, it is helpful to maintain good habits and a good resting time for regular menstruation. It is recommended not to overexert yourself and not to diet excessively in general.