So interesting! This is, as that GIF with Phoebe from Friends put it, "brand-new information!" (At least to me-- never heard of "bi-cycling" tracking with menstrual cycling before!) Particularly because it's one of those phenomena that's bi-specific; the whole cycling/fluctuation in our attraction to the sexes really has no parallel among monosexuals, I don't think (they can experience increased or diminished desire, of course, but only ever for one sex, which seems like quite a different matter to me). And I feel that the ways in which we are clearly "our own thing" (rather than the popular misunderstanding of us as "half-and-half") are especially important to emphasize.