Relationship between endometrium and tights
The peak of intrauterine pressure in the first three days of human menstrual cycle is 5.33-9.33 kPa (40-70 mm Hg), and the average is 1.07-6.93 kPa (8-52 mm Hg), which is obviously higher than abdominal pressure and is caused by uterine contraction. The uterine wall relaxes between contractions, and the intrauterine pressure is equal to the abdominal pressure when the cervix is closed. The rising intra-abdominal pressure suddenly drops. Even if the cervix is not opened, the uterine cavity with thick and hard muscle wall will maintain the rising intrauterine pressure in a short time, and the pressure gradient from the uterine cavity to the fallopian tube cavity will also change.
It can reverse hematocele in uterus and exfoliated endometrium. According to this reasoning, the tights reach the pressure of the solid tissue in the abdomen, and the junction of uterus and fallopian tube is relaxed between two contractions when undressing, so menstrual blood can flow back. According to this truth, EM should rarely appear in women who don't wear it to increase abdominal pressure.
abstract
So it can be seen from here that tights have a certain relationship with the movement of endometrium. In order to avoid endometrial movement, women are advised to avoid wearing tights as much as possible during the physiological period.
Wearing tight clothes during menstruation may also make your blood flow not smooth, which is not conducive to personal health. Tights are not very breathable. If the permeability is not good, it will easily lead to the invasion of bacteria, which will lead to the increase of gynecological problems such as vaginitis. We can try to avoid it under our own control. It is also recommended that women try to wear breathable cotton and loose clothes during menstruation, and of course pay attention to personal hygiene.