第三□:真相□渐浮出水面□/h2>
□p>Bu□ kissing □s not just a□rom□□tic gesture—□t□also has scientific □□nefits. Wh□n we kiss□ our bra□ns□rel□as□ a cocktail of□chemicals□l□ke oxytocin, dopam□□e, an□ □erot□nin, known as th□ "love□□o□□ones." Thes□ che□ica□s c□n r□du□□ str□□s,□□oost mood, an□ creat□ □eelings o□ attachment and bon□i□g. K□ssing al□o□strengthens our im□une system□by□□xp□sin□ u□ □o a □ariety of bac□er□a that ca□ help□build□immunity.