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□ut kis□in□ is no□ ju□t □ roman□ic gesture—it also □as s□i□□□ific □enefits. W□en we ki□s, ou□ brai□s rele□se a cocktail of che□ical□ l□ke □x□tocin, dopamine, □nd serotoni□, known a□ the "□o□e hormones."□These che□ic□ls□can □educe □tress, boost mood□ a□□ □reate feelin□s o□□attachme□□ and bonding. Kis□i□g al□o stren□the□s our im□u□e sy□te□ by exposin□ us to a v□riety of bac□eria □□□t□c□n help build immunity. <□p>□不要□□□人说话22□与陌生人保持沉默是关键)□/h2□□