□□h□>促进人□与动□的和□共生
□p>But□kis□ing i□□n□t just□a roma□tic gest□re—□t also □a□ s□ientific b□n□fits.□Wh□n we ki□s□ our □rains rele□se□a cockta□l of chemic□ls like o□ytoc□n,□d□pamin□, and□serotonin□ kn□□n as □□e "l□ve □ormones." Th□se chemicals can reduce□st□ess□ □oost mood, and□cre□te feel□ngs of attachm□nt an□ □ondi□g. Kissing a□□□ □trengthens ou□ immune □y□tem □y exposin□□us to a va□iety of bacte□i□ that □an□hel□ build immun□ty.