1. Body symmetry

That is, the left half of the body should be exactly the same as the right half, and the limbs should be well-proportioned. Randy Thornhill has been studying symmetry for the past 15 years. He used a scanner to input the faces and bodies of different people into a computer to determine symmetry ratios. The survey results show that both men and women believe that the opposite sex with good body symmetry is more attractive. Thornhill explained that this is a genetic advantage that indicates a person has good survival ability and that she/he is very healthy. In comparison, men view women in a slightly different way. They pay more attention to the symmetry of a woman's face than her body.

2. Sexy chin

Women with short chins and men with thick eyebrows are most popular. Thornhill said men and women with these characteristics are more attractive because they predict reproductive health. Estrogen limits the growth of bones in a woman's lower face and chin, making them relatively short, and it also controls the growth of women's eyebrows, making them more prominent. Men are affected by testosterone, which contributes to a good lower face, chin, and thick eyebrows.

3. Waist-to-hip ratio

Devendra, a psychologist at the University of Texas in the United States? Singer studied people's waist-to-hip ratio and found that women with a waist-to-hip ratio of 0.7 (indicating that the waist is much thinner than the hips) are the most attractive to men. Scientists once analyzed the body shapes of a certain magazine model and Miss America contestants and found that most of these women have a waist-to-hip ratio of less than 0.7. For women, men with a waist-to-hip ratio between 0.8 and 1.0 are most attractive. At the same time, men's broad shoulders are more arousing to women's sexual desire.

Research also shows that people with an ideal waist-to-hip ratio, regardless of their weight, are less susceptible to cardiovascular, cancer, diabetes and other diseases. And women who fall within this range also experience fewer difficulties getting pregnant.

4. Body odor

German scientist Manfred? Research by Milinski and others found that people instinctively use their noses when choosing a partner and judge whether the partner is suitable for them based on their smell. Scientists explained that this function of relying on the sense of smell to assist in identifying your sweetheart is related to the body's immune tissue. When people are close to each other, the odor emitted by their bodies will be sensed by each other and judge whether it will cause discomfort to the tissues and organs in the body. Generally speaking, this kind of identification of the other person's body odor will not be affected by external smells. That is to say, although the appropriate use of perfume may help to enhance the other person's goodwill, it will not play a decisive role.

5. Sense of humor

Researchers have found that once lovers complete the long-distance love race, personality similarities will make their relationship stronger. In addition, a sense of humor can also help maintain a long-lasting relationship. Eric from McMaster University in Canada? Bressler said the importance of humor differs between men and women, with women favoring men who make them laugh often, while men prefer women who are amused by their own jokes.

6. Honesty

Interestingly, scientists' brain scans of people who have just fallen in love show that the top quality of a lover is honesty. Stephen from Cornell University? Emlen and his colleagues conducted a questionnaire survey on nearly a thousand young people aged 18 to 24 years old, and found that volunteers were particularly concerned about the honesty of potential partners. The most important characteristics after honesty were appearance, family Responsibility, wealth and status.

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