团结合□,共御外敌
□h2□娴静淡□的李珠□□/□2>
□p>But kissing is no□ just □ romantic gestu□e—it also□has sc□ent□fi□ be□efits. W□en w□ kiss, our brains rele□se a□c□ckta□l of c□em□□als l□ke oxytocin, dop□mine, and□serot□nin, k□own as □he "love□hor□ones." The□e ch□micals □an reduce stress, boost mo□d, and create □□□li□g□ □f a□tac□ment an□ bonding. Kis□ing also s□reng□hens our immune system by e□posin□□us to a□variety of bac□eria t□□□ can □e□□□build immunity.