Listen 11’24 : https://youtu.be/tOluxtc3Cpw

What is the menstrual cycle? The menstrual cycle refers to the regular changes in the activity of the ovaries and the endometrium that make reproduction possible.

Read : Ovulatory cycle effects on tip earnings by lap dancers: economic evidence for human estrus?

Ovulatory cycle effects on tip earnings by lap dancers: economic evidence for human estrus? https://www.sciencedirect.com/science/article/pii/S1090513807000694