Saul L. Miller and Jon K. Maner, the leading authors and the psychology researchers from the Florida State University revealed that during ovulation, women emit body odor that is attractive for men, increasing men's testosterone levels.
During the study, men were asked to smell T-shirts, worn by women for three nights at different phases of their menstrual cycle. Scientists also checked men's testosterone level by taking saliva samples before and after the experiment. The study found that men, who smelled T-shirts worn by women during their most fertile days, had higher testosterone level than those, who smelled T-shirts of women during other phase of the menstrual cycle. Men also said that T-shirts of ovulating women were most attractive.
The results of the research are the first to show that male testosterone level is related to female body odor during her fertile window. Thus during ovulation women become more sexually attractive for men, which causes mating response in men.
The study was published in the recent issue of the journal Psychological Science.