By sleeping on one side with your legs tucked up next to your stomach, the foetal position “takes pressure off the abdominal muscles,” gynaecologist Lisa Lindley explains to an America glossy magazine.
“Many women report that the foetal position can help relieve cramps,” adds M.D. Jennifer Wider. This is because the muscles around the abdomen are encouraged to relax, which reduces the tension and therefore the cramping.
Period-tracking app Clue have also shown that the foetal position decreases the chances over overnight leakage, as the legs are squeezed together. So whatever you do, just make sure you avoid sleeping face-down when Aunt Flo is in town. Lying on your stomach can cause the uterus to squeeze, which can increase the amount of blood lost, warns Dr. Wider.