5 little-known facts about your period

14. Menstrual discharge contains more than blood.

It also contains shedded uterine tissue, which gives it a thicker and gummier consistency than blood alone.

15. Your period can also change your voice.

One study published in the journal Ethology claimed that men who listened to recordings of women’s voices were generally able to tell which women were menstruating. One would assume that their tone while menstruating was slightly more menacing than normal.