If you thought sex during periods is taboo then probably you don t know that a woman s sexual desires during her periods reach its peak. No we are not making up things over here. The very hormonal changes that are responsible for her periods are also responsible to make her crave for sex. There are numerous studies also that support this fact. Know how much blood loss during periods is normal. But not many women talk about their desire often during periods. And we believe there could be reasons for that heavy periods overflow cramps periods induced migraines and