高考英语备考主题语境阅读：生活习惯

高考英语备考主题语境阅读：生活习惯阅读理解素养视角：不吃早餐锻炼或更有益健康For those who can stomach it, working out before breakfast may

高考英语备考主题语境阅读：生活习惯 I. 阅读理解 素养视角：不吃早餐锻炼或更有益健康 Forthosewhocanstomachit,workingoutbeforebreakfastmaybemorebeneficial forhealththaneatingfirst,accordingtoastudyofmealtimingandphysicalactivity. Athletesandscientistshavelongknownthatmealtimingaffectsperformance. However,farlesshasbeenknownabouthowmealtimingandexercisemightaffect generalhealth. Tofindout,Britishscientistsconductedastudy.Theyfirstfound10overweightand inactivebutotherwisehealthyyoungmen,whoselifestylesare,forbetterandworse, representativeofthoseofmostofus.Theytestedthemen'sfitnessandrestingmetabolic （新陈代谢的）（样品） ratesandtooksamplesoftheirbloodandfattissue. Then,ontwoseparatemorningvisitstothescientistslab,eachmanwalkedforan houratanaveragespeedthat,intheory,shouldallowhisbodytorelymainlyonfatfor fuel.Beforeoneoftheseworkouts,themenskippedbreakfast,meaningthatthey 禁食）. exercisedonacompletelyemptystomachafteralongovernightfast（Ontheother occasion,theyatearichmorningmealabouttwohoursbeforetheystartedwalking. Justbeforeandanhouraftereachworkout,thescientiststookadditionalsamplesof themen'sbloodandfattissue. Thentheycomparedthesamples.Therewereconsiderabledifferences.Most obviously,themendisplayedlowerbloodsugarlevelsatthestartoftheirworkoutswhen theyhadskippedbreakfastthanwhentheyhadeaten.Asaresult,theyburnedmorefat duringwalksonanemptystomachthanwhentheyhadeatenfirst.Ontheotherhand, （卡路里）， theyburnedslightlymorecaloriesonaverage,duringtheworkoutafter breakfastthanafterfasting. Butitwastheeffectsdeepwithinthefatcellsthatmayhavebeenthemostsignificant, theresearchersfound.Multiplegenesbehaveddifferently,dependingonwhether