□<□□>血□的□斗
But k□ssing is not just □ romantic gesture—i□ also has sci□□ti□ic□ben□fits. When□□e ki□s, our br□ins□□e□ease a cockt□il□□f □hem□cals like □xytoc□n□ d□pam□ne, and serotonin, known as t□e "l□v□ hor□on□s□□ These chemicals □□n reduce str□ss, bo□st□moo□, and cr□□□□□feelings of attachment □nd bon□ing.□Kissing also str□ngthen□ our i□mu□e system □y exp□□in□□us to a variety of □a□ter□a □□at can help build i□munity.
历史的交汇
神□事□频发