“Finally,youbegintounderstandthatthetoppointyouendeavortoseekisjustthebalancepointofyourlife!”
※这一次下方有中文总结哦~
CoffeineiswidelypopularandappliedOver,metrictonsofcaffeineareconsumedaroundtheworldeveryyear.That’sequivalenttotheweightof14EiffelTowers.Mostofthiscaffeineisconsumeincoffeeandtea,butitsalsoingestedinsomesodas,chocolate,caffeinepills,andevenbeverageslabelleddecaf.Caffeinehelpsusfeelalert,focused,happy,andenergetic,evenifwehaven’thadenoughsleep.Butitcanalsoraiseourbloodpressure,andmakeusfeelanxious.It’stheworldmostwidelyuseddrug.
howdoescoffeinekeepusawake?Sohowdoesitkeepusawake?Caffeineevolvedinplantswhereitservesafewpurposes.Inhighdoses,asit’sfoundintheleavesandseedsofcertainspecies,it’stoxictoinsects.Butwhentheyconsumeitinlowerdoses,asit’sfoundinnectar,itcanactuallyhelpthemrememberandrevisitflowers.
Inthehumanbody,caffeineactsasastimulantforthecentralnervoussystem.Itkeepsusawakebyblockingoneofthebody’skeysleep-inducingmolecules,asubstancecalledadenosine.Yourbodyneedsaconstantsupplyofenergy,whichitgetsbybreakingdownahigh-energymoleculecalledATP.Intheprocess,itliberatesadenosine,ATP’schemicalbackbone.Neuronsinyourbrainhavereceptorsperfectlytailoredtothismolecule.Whenadenosinedockstothesereceptors,itactivatesacascadeofbiochemicalreactionsthatcauseneuronstofiremoresluggishlyandslowthereleaseofimportantbrain-signalingmolecules.Inotherwords,yougetsleepy.
Caffeineiswhat’scalledanadenosinereceptorantagonist.Thatmeansitderailsthisprocessofslowingyourneuronsdownbyblockingadenosinereceptors.Caffeineandadenosinehaveasimilarmolecularstructure,closeenoughthatcaffeinecanwedgeintotheadenosinereceptors,butnotcloseenoughtoactivatethem.Tosummarize,adenosineinhibitsyourneurons.Caffeineinhibitstheinhibitor,soitstimulatesyou.
CaffeineisgoodforyourbodyandmindCaffeinecanalsoboostpositivefeelings.Insomeneurons,theadenosinereceptorsarelinkedtoreceptorsforanothermoleculecalleddopamine.Oneofdopamine’srolesinthebrainistopromotefeelingsofpleasure.Whenadenosinedocksinoneofthesepairedreceptors,thatcanmakeitharderfordopaminetofitinitsownspot,interruptingitsmood-liftingwork.Butwhencaffeinetakesadenosine’splace,itdoesn’thavethesameeffect,anddopaminecanslidein.
There’sevidencethatcaffeine’seffectsonadenosineanddopaminereceptorscanhavelong-termbenefits,too,reducingtheriskofdiseaseslikeParkinson’s,Alzheimer’sandsometypesofcancer.Caffeinecanalsorampupthebody’sabilitytoburnfat.
Infact,somesportsorganizationsthinkthatcaffeinegivesathletesanunfairadvantageandhaveplacedlimitsonitsconsumption.Fromuntil,Olympicathleteshadtostaybelowacertainblood-caffeineconcentrationto
本文编辑：佚名
转载请注明出地址 http://www.hongzhiyujina.com/hzyjjz/7416.html
