10. Reduces mental stress.
Kissing passionately helps to dilate your blood vessels and releases endorphins which are a stress buster and even helps prevent depression.
11. Increases saliva production.
Kissing increases the production of saliva which in turn helps to prevent tooth decay. Yep, you read that right, saliva helps in balancing the acids produced in our mouth and prevents tooth decay.
12. To show them that you really love them.
Saying I love you out loud is not the only way to express your feelings towards your partner. There are a lot of different ways to show them, and kissing is definitely one of the prior ways. Kissing is necessary in a relationship to show the other person in a deep connection your love for them.
