□
社□问题的反映与引发□/□2>
□p>But kissin□□i□ no□ j□st a rom□ntic gesture—it□□lso has scientifi□ benefit□□ When we kiss, our brai□□ release a cocktail of chemic□ls lik□ o□ytocin, dopamine, a□d □□roton□□, kno□n as t□e "l□ve hor□ones."□These ch□micals can □educe□s□ress,□bo□st mood, and c□e□t□ fe□lings of□at□achment □□d b□n□ing.□Kissin□ also □tren□□hens□our □mmune system by□exposing□us□□o a var□□ty□of b□ct□ria that can □□lp □□□□□ □□munity.