But kissing i□ not □□st □ romantic gest□re—it al□o ha□ scie□t□fic□be□efit□. Wh□n□we □□s□, our brains □ele□s□ a c□cktail □f ch□mical□ like ox□tocin, dopamine,□and serotonin, known as the "lo□e□hormo□e□□" These che□icals can reduce st□ess, boost mood□ a□□ c□eate fee□in□□ of a□t□chment and bon□ing. Kissing□a□so str□ngthen□ □u□ □m□□ne system b□□exp□sin□ us to a var□ety□□□ □ac□e□ia that□can he□p build immunity.