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TED英语演讲稿为什么节食减肥没效果? VIP免费

TED英语演讲稿为什么节食减肥没效果? _第1页
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此资料由网络收集而来,如有侵权请告知上传者立即删除。资料共分享,我们负责传递知识。TED英语演讲稿:为什么节食减肥没效果?简介:在美国,80%的女孩在她们10岁的时候便开始节食。神经学家sandraaamodt结合自己的亲身经历,讲述大脑是如何控制我们的身体的。节食减肥为何没效果?来听听她的说法吧!threeandahalfyearsago,imadeoneofthebestdecisionsofmylife.asmynewyear'sresolution,igaveupdieting,stoppedworryingaboutmyweight,andlearnedtoeatmindfully.nowieatwheneveri'mhungry,andi'velost10pounds.thiswasmeatage13,whenistartedmyfirstdiet.ilookatthatpicturenow,andithink,youdidnotneedadiet,youneededafashionconsult.(laughter)butithoughtineededtoloseweight,andwhenigaineditback,ofcourseiblamedmyself.andforthenextthreedecades,iwasonandoffvariousdiets.nomatterwhatitried,theweighti'dlostalwayscameback.i'msuremanyofyouknowthefeeling.asaneuroscientist,iwondered,whyisthissohard?obviously,howmuchyouweighdependsonhowmuchyoueatandhowmuchenergyyouburn.whatmostpeopledon'trealizeisthathungerandenergyusearecontrolledbythebrain,mostlywithoutyourawareness.yourbraindoesalotofitsworkbehindthescenes,andthatisagoodthing,becauseyourconsciousmind--howdoweputthispolitely?--it'seasilydistracted.it'sgoodthatyoudon'thavetoremembertobreathewhenyougetcaughtupinamovie.youdon'tforgethowtowalkbecauseyou'rethinkingaboutwhattohavefordinner.yourbrainalsohasitsownsenseofwhatyoushouldweigh,nomatterwhatyouconsciouslybelieve.thisiscalledyoursetpoint,but此资料由网络收集而来,如有侵权请告知上传者立即删除。资料共分享,我们负责传递知识。that'samisleadingterm,becauseit'sactuallyarangeofabout10or15pounds.youcanuselifestylechoicestomoveyourweightupanddownwithinthatrange,butit'smuch,muchhardertostayoutsideofit.thehypothalamus,thepartofthebrainthatregulatesbodyweight,therearemorethanadozenchemicalsignalsinthebrainthattellyourbodytogainweight,morethananotherdozenthattellyourbodytoloseit,andthesystemworkslikeathermostat,respondingtosignalsfromthebodybyadjustinghunger,activityandmetabolism,tokeepyourweightstableasconditionschange.that'swhatathermostatdoes,right?itkeepsthetemperatureinyourhousethesameastheweatherchangesoutside.nowyoucantrytochangethetemperatureinyourhousebyopeningawindowinthewinter,butthat'snotgoingtochangethesettingonthethermostat,whichwillrespondbykickingonthefurnacetowarmtheplacebackup.yourbrainworksexactlythesameway,respondingtoweightlossbyusingpowerfultoolstopushyourbodybacktowhatitconsidersnormal.ifyoulosealotofweight,yourbrainreactsasifyouwerestarving,andwhetheryoustartedoutfatorthin,yourbrain'sresponseisexactlythesame.wewouldlovetothinkthatyourbraincouldtellwhetheryouneedtoloseweightornot,butitcan't.ifyoudolosealotofweight,youbecomehungry,andyourmusclesburnlessenergy.dr.rudyleibelofcolumbiauniversityhasfoundthatpeoplewhohavelost10percentoftheirbodyweightburn250to400calorieslessbecausetheirmetabolismissuppressed.that'salotoffood.thismeansthatasuccessfuldietermusteatthismuchlessforeverthansomeoneofthesameweightwhohasalwaysbeenthin.fromanevolutionaryperspective,yourbody'sresistanceto此资料由网络收集而来,如有侵权请告知上传者立即删除。资料共分享,我们负责传递知识。weightlossmakessense.whenfoodwasscarce,ourancestors'survivaldependedonconservingenergy,andregainingtheweightwhenfoodwasavailablewouldhaveprotectedthemagainstthenextshortage.overthecourseofh...

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TED英语演讲稿为什么节食减肥没效果?

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