<□□>挚友与情人□□p>But □issing is not □ust a ro□antic gesture—i□ al□o has □cient□fic ben□f□□s□ □h□n we □iss,□□ur b□□i□s r□l□ase a cocktail o□ chemic□l□ li□e□o□ytocin, dopami□e, and□sero□on□n, k□own as the "love□□□rm□nes." Th□se chemicals can□□edu□e □tre□s,□bo□st mood, and create □e□li□□□□of atta□hment and bonding□ □□ssing also streng□hens our immune system by expo□ing u□ to a v□rie□y of ba□teria that ca□ help □uild immunity.