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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Tagged under: SciShow,science,Hank,Green,education,learn,McClintock effect,menstrual cycles,synchrony,synchronize,sync,cycles,cycle,period,McClintock,menstrual synchrony,psychology,psychologists,pheromones,Martha,28 days
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