By Roberta Attanasio In the rush of modern life, we often fail to notice the link between our biological rhythms and those of the natural world. In many animal species, the reproductive cycle is synchronized with different Moon phases—most likely because reproductive success is facilitated when different individuals within a species behave in the same way at the same time. The moon phases act like a guide to synchronize courtship, mating, and other reproductive behaviors. But what about women? To some people, a connection between the menstrual cycle and the Moon cycle is apparent because their length is very similar—about 29 days. Others argue that there is no connection, as the…