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.
environment
15 Etiquette Rules You Need to Know
Practicing good etiquette shows respect for those that you come in contact with throughout the day. You can remain professional in the workplace and courteous
PositiveMed
Feb 13, 2017
