不知大家有没有上台演讲过?
howmanypeoplehereinthisroomsmilemorethan20timesperday?raiseyourhandifyoudo.oh,wow.outsideofthisroom,morethanathirdofussmilemorethan20timesperday,whereaslessthan14percentofussmilelessthanfive.infact,thosewiththemostamazingsuperpowersareactuallychildrenwhosmileasmanyas400timesperday.haveyoueverwonderedwhybeingaroundchildrenwhosmilesofrequentlymakesyousmileveryoften?arecentstudyatuppsalauniversityinswedenfoundthatitsverydifficulttofrownwhenlookingatsomeonewhosmiles.youask,why?becausesmilingisevolutionarilycontagious,anditsuppressesthecontrolweusuallyhaveonourfacialmuscles.mimickingasmileandexperiencingitphysicallyhelpusunderstandwhetheroursmileisfakeorreal,sowecanunderstandtheemotionalstateofthesmiler.