In article <3c6ski$5cf at due.unit.no>, aka at nvg.unit.no (Anne Karin Amundgaard) writes:
>I have also heard a story about girls living close together. After a
>while they will get their period simultaneously! If humans have got
>sex-pheromone receptors, I don't know, but this story make it seem very
>possible.
This is true. Does anyone know why this happens?
Cybel
