WhyExerciseIsCool?1.ExerciseStrengthensMusclesDidyoueverdoapush-uporswingacrossthemonkeybarsattheplayground?小题1:Byusingyourmusclestodopowerfulthings,youcanmakethemstronger.Forolderteensandadult

　　WhyExerciseIsCool?

　　1.ExerciseStrengthensMuscles

　　Didyoueverdoapush-uporswingacrossthemonkeybarsattheplayground? 小题1: Byusingyourmusclestodopowerfulthings,youcanmakethemstronger.Forolderteensandadults,thiskindofworkoutcanmakemusclesbigger,too.

　　2. 小题2:

　　Canyoutouchyourtoeseasilywithoutyellingouch?Mostkidsareprettyflexible,whichmeansthattheycanbendandstretchtheirbodieswithoutmuchtrouble.Beingflexibleishaving“fullrangeofmotion,”whichmeansyoucanmoveyourarmsandlegsfreelywithoutfeelingtightnessorpain.

　　3.ExerciseKeepstheBalance

　　小题3: Yourbodyneedsacertainamountofcalorieseverydayjusttofunction,breathe,walkaround,anddoallthebasicstuff. 小题4: Ifyou’renotveryactive,yourbodywon’tneedasmanycalories.

　　Whateveryourcalorieneedis,ifyoueatenoughtomeetthatneed,yourbodyweightwillstayaboutthesame.Ifyoueatmorecaloriesthanyourbodyneeds,itmaybestoredasextrafat.

　　4.ExerciseMakesYouFeelGood

　　Itfeelsgoodtohaveastrong,flexiblebodythatcandoalltheactivitiesyouenjoy—likerunning,jumping,andplayingwithyourfriends.It’salsofuntobegoodatsomething,likescoringabasket,hittingahomerun,orperfectingadive.

　　Butyoumaynotknowthatexercisingcanactuallyputyouinabettermood. 小题5: It’sjustanotherreasonwhyexerciseiscool!A．Soyouwanttodosomeaerobic(有氧的)exerciserightnow?B．Foodgivesyourbodyfuelintheformofcalories,whichareakindofenergy.C．Whenyouexercise,yourbrainreleasesachemical,whichmaymakeyoufeelhappier.D．Thoseareexercisesthatcanbuildstrength.E.ExerciseMakesYouFlexible

　　F.ExerciseMakesYourHeartHappy

　　G.Butifyou’reactive,yourbodyneedsanextrameasureofcaloriesorenergy.