Sexual desire is a magical thing. For men, sometimes just looking at a woman's breasts or a simple kiss can trigger the "switch" of sexual desire. Recently, the American "Women's Day" website asked sexologists to select some strange factors that can stimulate men's sexual desire, which are called "Top Ten Natural Aphrodisiacs for Men."

1. Slender and well-proportioned arms. Researchers at the University of New South Wales in Sydney, Australia, asked male volunteers to watch videos about women. Men always rate women with slender arms as the most attractive and arousing to them, but women with slender legs are not ranked. Researchers believe that long arms make women look slimmer, suggesting they perform better in bed and are more huggable.

2. Coordinating underwear. Men like it when their female companions wear matching lingerie, they think it's sexy. Marriage expert April Matheny said that this is because men will feel that their female partners spend time, money and energy on decorations just for them, and others cannot see it. Female friends may wish to wear a new set of coordinated underwear to give their male partner a sexual surprise, and they can choose red-colored bras, panties, etc. to make the charm irresistible.

3. A certain smell from childhood. A study by the Chicago Smell and Taste Research Center found that the smell of pumpkin pie combined with lavender increased blood flow to a man's penis more than 23 other scents. The reason may be that the scent of this combination is reminiscent of a warm and happy family dinner, or it may make men feel more relaxed. Further research showed that the smell of a familiar food from childhood can have the same effect.

4. Round hips and thighs. Many men are stimulated by a woman's rounded buttocks and thighs. Scientists from the University of Pittsburgh and the University of California, Santa Barbara believe that this can be explained from an evolutionary perspective. Round buttocks and thighs contain omega-3 fatty acids, which can be transferred to the placenta through the blood of pregnant women and nourish the development of the fetal brain.

5. A woman who is close. According to the proximity theory of attraction, women around you are more likely to arouse men's sexual desire. Marriage expert Karin Rosenberg said: "Men will not be attracted to women just because of commonality, they will be attracted by regular mutual proximity." Rosenberg pointed out that men are more likely to pursue women who often happen to patronize the same person as themselves. Female colleagues in a restaurant. "When men want to change their single life, they respond more to stability and familiarity," she added.

6. Sense of fear. Researchers at the University of British Columbia asked two groups of male participants to stand on two bridges. One bridge was very strong, and the other was long, shaky, and suspended more than 70 meters above the ground. The researchers then arranged for a beautiful female assistant to ask the two groups of men to fill out questionnaires. It turned out that the answers given by the men standing on the dangerous bridge were very explicit. Because fear will stimulate certain parts of the male brain and make him lustful.

7. A woman who looks like me. Men have a soft spot for women whose looks are more consistent with their own. Rosenberg says homotypic binding theory may explain why. That is, people will combine with people who have certain physical characteristics similar to themselves.

8. The woman laughs. Maria Sophocles, an assistant professor at the University of Basel in Switzerland, said that men are unconsciously aroused by women's laughter, perhaps because women's laughter reminds men of women's cries during sex.

9. red. According to a study published in the Journal of Personality and Social Psychology, researchers asked men to rate women wearing different colored clothing. It was found that men found women who wore dark red clothes to be the most attractive, and even if the same woman changed the color of her clothes, they still found them most attractive when they wore red. The cultural associations caused by the color red, such as red light districts, play a role. However, there are certain physiological reasons for this. Women or female primates’ faces become rosy before ovulation, and they are most attracted to males when they are most fertile.

10. Women's sex products. Sue W. G. Destin is the program coordinator of sexual medicine at the San Diego Medical Institution in the United States and is also a health educator. She said that men’s sexual desire increases when they see sex products with their female partners, such as lubricants, sexy clothing, condoms, etc. Will start quickly. Seeing their female partners masturbating is also an irresistible "aphrodisiac" for them.