Chinese people sometimes use "covetousness" to describe men's love for women. Recently, an article published in the United States "Medical Daily" corroborated the scientific nature of this statement: when men see beautiful women, the salivary secretion will really increase.

Researchers at the Institute of Psychological Biology at the University of Chicago selected 39 heterosexual men aged 21-31 years and five women aged 19-23 years. These women are young and beautiful. They will be close to men and chat with them. Before and after the women approached the male participants, the researchers extracted saliva from the male oral cavity for analysis. As a result, it was found that the amount of saliva in the oral cavity of male subjects remained the same when they were held for a short period of time, and the saliva of their oral cavity was only when the male subjects interacted with females for only a short period of 5 minutes. It will increase greatly, and the testosterone content will also increase.

Researchers say that when men and women come in contact with each other, their bodies will produce a series of reactions, and the hormones in the body will change accordingly, which is reflected in the oral cavity, which is the increase of testosterone in saliva. This similar phenomenon can also be observed during the vertebrate courtship process.

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