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.
Facts
What Exactly Happens When Sperm Meets Egg?
The moment when sperm meets egg is known as conception. Sperm can take anywhere between 45 minutes to 12 hours to reach the fallopian tubes
PositiveMed
Nov 28, 2016
