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April 17, Ovulation has been shown to impact a woman's mating preferences. For instance, women in the fertile phase of their menstrual cycle favor more masculine traits , such as a deep voice or manly face, characteristics associated with the hormone testosterone, studies have found. Other research suggests fertile women are attracted to men with high levels of the stress hormone cortisol, which may be involved in stronger immune systems. In the new study, researchers tested how women's sexual scent preferences changed depending on men's levels of testosterone and cortisol. Male volunteers were given T-shirts to wear for two consecutive nights, during which time they were prohibited from using scented soaps or detergents; drinking or smoking; or eating garlic, onion, green chiles, strong cheeses and other pungent foods.In the new study, researchers tested how women's sexual scent preferences changed depending on men's levels of testosterone and cortisol. Watch Very hot man and woman on bcwd.us, the best hardcore porn site. Pornhub is home to the widest selection of free Big Tits sex videos full of the. Hot. Forest nail Forest nail 74% · [GVC ] Muscly guys kinky Sex [ GVC ] Muscly guys kinky Sex 77% · charming homosexual twinks ..the end of the story look at the video above ↑ ↑ ↑