As soon as the lips are pressed against each other, there is inevitably an exchange of bacteria between you and your partner, and scientists believe that it is precisely the exchange of these new bacteria that strengthens immunity.
The amount that is exchanged is extremely small so that the body can easily develop a defense against new bacteria and thus additionally strengthen our immunity.
See what else kissing is good for:
Kissing is good for your teeth
There's a reason we call them wet kisses—kissing stimulates the production of saliva, which can then literally wash away bacteria from your teeth.
Kissing burns calories
Although it is not quite as effective as going to the gym, kissing can burn up to 6 calories per minute and also strengthen numerous facial muscles.
Kissing relieves us of stress
Feeling relaxed doesn't just come from your head. A study conducted in 2009 measured the level of the stress hormone cortisol in college students before and after a kiss.
After a kiss, the level of cortisol in the body was significantly reduced in both women and men, to a greater extent than if they just held hands.
Kissing reduces allergy symptoms
If you think that your sneezing is the result of an allergy, it would be best to exchange a few kisses with your partner, since kissing reduces the level of the IgE protein that activates sneezing and all the other discomforts that allergies bring with it, reports Nezavisne novine.
Bonus video:
