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 leave days of "menstrual leave" per month, which will not be calculated toward the 30 days of "common sick leave", giving women up to 33 days of "health-related leaves" per year. The extra three days do not come with half-pays once a woman employee exceeds the regulated 30. Menstrual leave Menstrual leave is a type of leave where a woman may have the option to take paid or unpaid leave from her employment if she is menstruating and is unable to go to work because of this. Menstrual leave is controversial because it is seen by some as a criticism of