□□>B□t ki□sing is not jus□ a romant□□ □e□ture—i□ also□has scien□ific be□efi□s. Whe□ we k□ss, our □□ains re□ease a cockta□□ o□ chemical□ □ike o□ytoci□, dop□□i□e, and serotonin□ know□ as th□ "lo□e h□rmones." T□ese chemic□ls□□a□ redu□e stress,□boost mo□d,□and create □eelings of □t□achment and bon□ing□ Kissi□□ □l□o stre□gthens our immune sy□tem b□ exposing □s to a varie□y□of bac□eri□ th□□□ca□ help bui□d i□munity.