1- It lowers our blood pressure?
Because our lips are made up of blood vessels, kissing can lower blood pressure by dilating them and therefore allowing blood to flow to the vital organs.
2- Kissing helps get rid of headaches?
Kissing helps your body produce endorphins and endorphins make you happy.
-favim.com
3- Immune System
The saliva that enters your mouth from your partner is actually boosting your immune system.
4- Major Histocompatibility Complex
MHC is a process that our bodies go through when we kiss a potential partner. Our bodies subconsciously share information about our immune systems with our partners. Its natures way of ensuring that your offspring has the highest chance of survival.
Thanks for sharing!
Check out “The Science of Kissing” by Sheril Kirshenbaum