<□>But kissing is not j□st□a □omantic gesture—it also h□s □cienti□□c benef□ts.□□hen we□kis□,□our□brains□r□l□ase a cock□ail□of chemical□□li□□ oxytocin, d□pamine, a□d se□otonin, known as th□ "□ove hormones□"□T□ese ch□m□cals can □□duce □tres□, bo□st moo□, and □reate feeli□gs of□att□chment an□ bo□din□. Kissing als□□strengt□en□ □ur imm□ne sy□t□m by □xposing us□t□ □ var□ety□o□ bacter□□ that ca□ help build immunit□.