Here is an amazing fact about human body: On average, menstrual cycle is 28 days, from the first day of menstruation to the first day of next cycle. But the menstrual period of those women who are close friends or live closely together, for example in a dorm, gradually synchronizes (occurs at the same time).
While there is some debate over “menstrual synchrony”, but Pheromones (Airborne chemical signals) and sense of smell are believe to be responsible for this interesting phenomenon.
Inspiration
Multiple Chemical Sensitivity, What Is It?
Multiple Chemical Sensitivity, or MCS, also goes by other names such as Chemical Injury, Chemical Sensitivity, Environmental Illness or EI, and Multiple Allergy. What it
PositiveMed
Feb 18, 2013
