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.
health
Girl Born Without Windpipe
Hannah Warren is a Korean-Canadian toddler, two and a half years old, was born without a windpipe or trachea, this made her live since birth
PositiveMed
May 6, 2013
