How menstruation works Emma Bryce

View full lesson: Made in partnership with the Always, LikeAGirl campaign. At this moment, three hundred million women across the planet are experiencing the same thing: a period. The monthly menstrual cycle that gives rise to the period is a reality that most women on Earth will go through in their lives. But why is this cycle so universal And what makes it a cycle in the first place Emma Bryce gives a primer on periods. Lesson by Emma Bryce, animation by Kozmonot Animation Studio.