How painful are period cramps, according to science?

The society shrouds menstruation in secrecy; it is regarded as uncouth to talk about menstruating. The word “hysteria” even has its roots in the Greek word for uterus.

Every woman who has completed her adolescence and who isn’t experiencing menopause goes through a monthly round of vaginal bleeding called menstruation.

The first to three days of menstruation are usually very painful, but the pain subsides as the uterine wall sheds further. The uterus is a muscle that contracts and relaxes during period cramps.