Do Menstrual Cycles Really Sync Up?

Have you had your period at the same time as your friends or family members? Is this a physiological effect or coincidence? Join Hank Green as he provides some insight on this phenomenon!

Hosted by: Hank Green
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Sources:
https://www.wellesley.edu/alumnae/awards/achievementawards/allrecipients/martha-mcclintock-69
http://www.scientificamerican.com/article/do-women-who-live-together-menstruate-together/
http://www.nature.com/nature/journal/v229/n5282/pdf/229244a0.pdf http://www.mum.org/mensyn.PDF
http://www.sciencedirect.com/science/article/pii/003193849390273I
https://labs.psych.ucsb.edu/roney/james/other%20pdf%20readings/reserve%20readings/wilson.pdf
https://www.sciencebasedmedicine.org/menstrual-synchrony-do-girls-who-go-together-flow-together/
https://smartsite.ucdavis.edu/access/content/group/05df5a0c-16e3-4d15-8626-76c7c012163b/Readings/Yang-Schank2006.pdf
http://link.springer.com/article/10.1007/s12110-006-1004-0
https://smartsite.ucdavis.edu/access/content/user/00003578/Publications/Schank_McClintock1992.pdf
https://smartsite.ucdavis.edu/access/content/user/00003578/Publications/Schank_AB2001.pdf
http://www.unomaha.edu/college-of-arts-and-sciences/callitrichid/publications/1987/French-Stribley-AJP.pdf
http://www.psyneuen-journal.com/article/0306-4530(91)90021-K/pdf
Images:
Golden Hamster: https://commons.wikimedia.org/wiki/File:Chomik_syryjski_(Just_a_Dream).jpg
Chimpanzee: https://commons.wikimedia.org/wiki/File:Schimpanse_Zoo_Leipzig.jpg
Golden Lion Tamarin:https://commons.wikimedia.org/wiki/File:Golden_lion_tamarin_portrait3.jpg

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