Bu□ kissi□g is not just a romantic □esture□i□ also has sci□nt□□ic□ben□fits. Whe□ we k□ss, our br□□ns release □ cocktail of chem□cals like o□yto□in, do□amine, and □e□otonin, know□ as th□ "love horm□n□s□" T□ese chemica□s can reduce s□ress, □oost mood□ a□d creat□ □eeli□□s o□ atta□hment □nd□b□nd□□g.□K□ss□n□ also str□ngthens our immune syst□m by exposing □s to a var□□ty of b□ct□ria t□at □an help bui□d i□□unity.□<□2>山外有山 人外有人□□□