Menstrual synchrony by chance when there is menstrual cycle variability. Yang and Schank argued that when there is cycle variability (i.e., either women have irregular cycles, have cycles of different frequencies, or both), most women will have the opportunity to experience synchrony even though it is a result of cycle variability and not a result of a mechanism such as the exchange of pheromones. For example, consider two women A and B. Suppose A has menstrual cycles that are 28 days long and B has cycles that are 30 days long. Suppose further that when A and B become close friends, B
Menstrual Hygiene Day related to menstrual hygiene management includes four aspects: awareness, access, use as well as waste management. The term “menstrual health” is broader than menstrual hygiene. It encompasses both the menstrual hygiene management practices and the broader systemic factors that link menstruation with health, well-being, gender, education, equity, empowerment, and human rights (in particular the human right to water and sanitation). Menstrual hygiene day is meant to serve as a platform to bring together individuals, organisations, social businesses and the media to create a united and strong voice for women and girls around the world, helping to break the silence about