Do periods really love company?

Welcome to The Global Period Project's Blog.

Join us in the most ambitious gender experiment ever attempted. Millions of women around the world synchronizing our menstrual periods.

Women that connect emotionally and share a physical space for a certain amount of time tend to menstruate simultaneously.
It is called “the McClintock effect” or “the dormitory effect”.
Can we replicate this globally?
Thanks to the internet, we can try.
All we need is for a few million women around the world to join us!
The goal? Who knows.
It’s just an experiment with no practical application. Yet.
Ideas are welcome.
Here's one: demanding governments around the world to grant women a five-day-long weekend every 28 days.
You are invited.
Let's be all part of something big.