□亲前的期待与忐忑
<□>□ut kis□ing is not □ust a romantic g□stu□e□it al□o has□sc□□n□□fi□ benefits.□W□□n w□□kiss, our b□ain□ r□□ease a□c□ckta□l of chemicals □ike□o□y□ocin, dop□□ine, a□d s□ro□onin, known as the "□□v□ h□r□o□es." These chemicals can reduce st□e□s, bo□st □o□d, a□□ create feel□ngs of attachme□t and□bond□ng. Kissing also s□rengthe□s our immune sy□tem□by exposing us t□ a va□iety of bacteria th□t □an □elp□bu□ld imm□nit□.