Stayinguplatewillbedetrimentaltohumanhealth,becausetheadrenalcortexhormoneandgrowthhormoneareallsecretedduringthenightwhenpeoplearesleeping.Theformerissecretedbeforedawn,whichcanpromotethemetabolismofcarbohydrateinhumanbody,andprotectthedevelopmentofmuscle;whilethelatterisproducedonlyaftersleep,whichcannotonlypromotethegrowthanddevelopmentofyoungpeople,butalsocandelaytheagingprocessoftheelderly.Asaresult,stayinguplatewillcauseavarietyofharmstohumanbody. 　　First,frequentfatigueanddecreasedimmunity 　　Themostserioussequencecausedbystayinguplateisfatigueandlackofenergy.What'smore,theimmunityofhumanbodywilldecreaseaccordingly.Andsomeothersymptomssuchascold,gastrointestinalinfections,allergieswillalsoappear. 　　Second,headache 　　Thenextdayafterstayinguplate,youwillsufferfromheadachewhenyouareatworkoratclass.Youwillbeunabletoconcentrate.What'smore,long-termstayinguplateandinsomniawillalsobringinvisibledamagetoourmemory. 　　Third,darkcirclesandpuffiness 　　Nightisthetimeforhumanbodytohaveagoodrest.Withoutadequaterest,youwillfeelextremelytired,whichwillleadtopoorbloodcirculationaroundtheeyes,causingdarkcirclesorbloodstreakinthewhiteoftheeye. 　　Fourth,dryskin,darkspotsandacne 　　Theperiodbetween11:00pmto3:00aminthenextdayisthebeautytime,anditisalsothetimeforthemeridiansinhumanbodytomovetogallbladderandliver.Ifthesetwoorgansdonothaveadequaterest,itwillbereflectedontheskin.Sosomeproblemssuchasroughness,yellowishface,darkspotsandacnewillappear.What'sworse,long-termstayinguplatewillslowlycausesomeneurologicalandpsychiatricsymptomssuchasinsomnia,forgetfulness,irritability,anxietyandsoon. 　　Fifth,affectingfertility 　　Forthemenandwomenofchildbearingage,iftheyalwaysstayuplate,itwillnotonlyaffectthemotilityandquantityofmalesperm,butalsowillaffectthesecretionoffemalehormoneandthequalityofovum,anditisalsolikelytoinfluencethemenstrualcycle. 　　Sixth,increasingtheprobabilityofgettingsomechronicdiseases 　　Peoplewhostayingupallnightalwayshavehighersecretionofadrenalinethantheaverageperson,whichwillincreasethepressureonmetabolism,andthusleadingtosomechronicdiseases,suchashypertensionanddiabetes. 　　What'smore,therearealsootherharmscausedbystayinguplate,suchaspooreyesightordysfunctionoftheliver.Weshouldpayspecialattentiontothesebadeffects,andtrynottostayuplateatnight. 　　--------------------------------- 　　Doyoualwaysworkorstudyuntilmidnight? 　　Doyouoftenhangoutorspendmuchtimeinpubsatlatenight? 　　Ifyouansweredyestoeitherofthesequestions,youareunfortunatelyoneofthelargegroupsofpeoplewhoalwaysstayuplate.Becauseofthefiercecompetitioninthesociety,itseemsthateveryonehasendlessworktodoandtwenty-fourhoursperdayisnotenough.Therefore,anincreasingnumberofpeoplestayuplateinordertofinishthemountainouswork.Besides,lotsofyoungpeopleenjoyentertainingatlatenight.However,manyofthemarestillnotawareofthebadeffectsofstayinguplate.Infact,itdoessevereharmtousinthreeaspects,namely