Scientists also found that a kiss will consume 12 calories, more than twice as much as usual, which is equivalent to the calories consumed by jogging 1 km or scrubbing the floor once. According to this truth, kissing helps to lose weight.

When two people kiss, their breath will deepen, their eyes will close, their whole body will relax and their tension will be swept away. But to achieve this effect, you must concentrate on kissing.

If you are very excited when kissing, your heart will beat faster, and more adrenaline will enter the blood to keep people healthy. In addition, kissing can strengthen facial muscles more than any massage, thus delaying the aging process.

Kissing also helps to remove wrinkles.

Hard and warm kissing can make facial muscles tense, help improve blood circulation, and even help smooth wrinkles on the epidermis.

German psychologists have also introduced a formula of "healthy kiss". After observing 100 kissing couples of different ages, they came to a conclusion that the ideal kissing time is 3 minutes, and it is best to look at each other's eyes when kissing, which will produce more passion. Kissing can also infect some diseases.

Kissing is a good thing, but it should also be noted that kissing can also infect some diseases. For example-

Diseases caused by cold, such as acute respiratory diseases, acute viral respiratory infections, pharyngitis, etc.

It can also be infected with cold and herpes virus.

Stomatitis.

Gastric ulcer caused by helicobacter pylori.

Dysentery caused by dirty hands.

Open tuberculosis.

Blood-borne viral infections, such as hepatitis B and C, and the human immunodeficiency virus that causes AIDS. Except for hepatitis B, these viruses are not transmitted through saliva, but they can't be said to be 100% safe, because there is no guarantee that there will be small wounds in either mouth.

Infectious mononucleosis (leukocytosis). This is a viral disease of blood, also known as "kissing disease", which can damage spleen and lymph nodes.