Thekeystoreachingorstayingatahealthyweightareregularexerciseandgoodeatinghabits.Teensshouldget60minutesormoreofphysicalactivityaday.Notetheword“activity”.Aslongasyou’regettingyourbodymoving,itdoesn

　　Thekeystoreachingorstayingatahealthyweightareregularexerciseandgoodeatinghabits.Teensshouldget60minutesormoreofphysicalactivityaday.Notetheword“activity”.Aslongasyou’regettingyourbodymoving,itdoesn’thavetomeandoingdifficultexerciseorgoingtothesportshalleveryday.Allthatmattersisthateachweekyougettherightbalanceofactivity,includingaerobics(有氧运动),strengthbuilding,andflexibility(柔韧)exercise.Makeexerciseahabitbyarrangingsometimeeveryday.

　　Ondayswhenyouhavesoccerpracticeoranaerobicsclass,youmayhavenotroubleexercisingforanhourormore.Butmostofusarebusy,and60minutesadayforexerciseseemslikealotoftime.Thegoodnewsisthatit’sOKtodivideitintoshorterexercisebreaksthroughouttheday.

　　Justasyoumighthaveahealthysnacktostopyourselffromgettinghungry,exercisesnackscankeepenergylevelshigh.Sogetup15minutesearlyanddosomestretching(伸展)activity.Walkfastorrunslowlyfor15minutesafterlunch.Dothesamethingafterschool—orwalkorbikehome.Addtothattakingthestairs,PEclass,andwalkingbetweenclassesduringtheday,andyou’veprobablyreachedyour60minutes.

　　Herearefivesimplewaystomakeanexerciselifestylechange:

　　小题1:Thewriterthinksmanypeopleprobablymisunderstandtheword“activity”tobe“_______”. A．physicalactivityB．bodymovementC．sportshallexerciseD．outdoorexercise小题2:Whenexercising,themostimportantfactis________.A．thetimespentonexerciseB．theintensityofactivityC．thedifficultyofexerciseD．therightbalanceofactivity小题3:Theauthoradvisesdividingactivityintoshorterexercisebreaksbecause___.A．exercisingforalongtimeisbadforpeople’shealthB．ithasthesameeffectassoccerpracticeC．peopleusuallyhaven’tmuchtimetoexerciseD．noonecansparelotsoftimetoexercise小题4:What’sthebesttitleforthispassage?A．Regularexercise.