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But □issing is not □ust a rom□ntic ge□ture□it a□so □as □ci□□tific benefits. W□en we kiss, our brai□s release a cock□a□l of chemicals l□ke oxyt□cin, dopamine□ and serot□n□n, □nown □s the "lov□□hormones□" Thes□□chem□cal□□can□reduce st□ess, boost □□od, and crea□e feelings of □t□□chme□t a□d □ondi□g. Ki□sing □lso□st□eng□□ens□our imm□ne□system b□ exposing us to □ □ariet□ o□ bac□e□ia t□at can help□bu□□d immu□ity.□>继□传承的使命<□□2>
新的□□挑战<□h2□
第二□:首播引发热议
<□2□感动□回忆<□h2>
挑战与成长