Researchers found that women’s total cholesterol levels rose in the first half of their cycle, as estrogen increased, dropped immediately before ovulation, then declined rapidly post ovulation, in the second half of the cycle.Testing at the end of your cycle—when your levels are at their lowest—reduces the risk that you’ll get a false positive.
When researchers surveyed 20- and 30-something women who weren’t pregnant or taking hormonal contraceptives, they found women were more likely to try a new product—everything from makeup to candy bars—when they were ovulating.
“We didn’t see this among women who were already in a committed relationship, who were more likely to say they were sticking with both the same partner and brands,” explains study author Kristina Durante, Ph D, associate professor of marketing at Rutgers Business School.
It’s possible that a heightened sense of smell helps you better sniff out a potential mate during this time of peak fertility.
When female college students were asked to look at photos of 80 men—half of whom were straight, and half gay—and determine the sexual orientation of each, they were more accurate the closer they were to ovulation, according to a study published in 2011 in .
As if those bids for attention weren’t enough, other studies have found that women are more apt to wear pink or red clothing during their most fertile window—the idea being that men are sexually attracted to women who are wearing red.
Women experience their most intense cigarette cravings right after their period, according to a 2014 study that measured brain activity in men and women who were shown both smoking-related and neutral images.
“Past studies have also shown that women's preferences for men's faces varies depending on where they are in their cycle, so it makes sense that their ‘gaydar’ might vary with these hormonal changes as well,” explains study coauthor Nicholas Rule, Ph D, associate professor of psychology at the University of Toronto.
Your skin color changes ever so slightly throughout your menstrual cycle, according to a 2015 University of Cambridge study.
Coupled-up women, however, were another story entirely, becoming more religious and conservative during this time.
“We’re not sure why, but it could be that their increased libido made them feel guilty, especially if they fantasizing about men they weren’t involved with,” theorizes Durante.
Women use a higher, more feminine pitch when they’ve ovulating, according to a 2009 UCLA study.