2012年12月暑期英语六级备考阅读每日一练 0803

查字典英语网 2016年03月01日

      JogginghasbecomethemostpopularindividualsportinAmerica. Manytheories, evensomemysticalones, havebeenadvancedtoexplainthepopularityofjogging. Theplaintruthisthatjoggingisacheap, quickandefficientwaytomaintainphysicalfitness.

      Themostusefulsortofexerciseisexercisethatdevelopstheheart, lungs, andcirculatorysystems. Ifthesesystemsarefit, thebodyisreadyforalmostanysportandforalmostanysuddendemandmadebyworkoremergencies. Onecantrainmorespecifically, asbydevelopingstrengthforweightliftingortheabilitytorunstraightaheadforshortdistanceswithgreatpowersinfootball, butrunningtrainsyourheartandlungstodeliveroxygenmoreefficientlytoallpartsofyourbody. Itisworthnotingthatthissortofexerciseistheonlykindthatcanreduceheartdisease, thenumberonecauseofdeathinAmerica.

      Onlyonesortofequipmentisneededagoodpairofshoes. Physiciansadvisebeginningjoggersnottoruninatennisorgymshoe. Manydesignadvanceshavebeenmadeinonlythelastseveralyearsthatmakeanexcellentrunningshoeindispensableifarunnerwishestodevelopasquicklyaspossible, withaslittlechanceofinjuryaspossible. Agoodrunningshoewillhaveasoftpadforabsorbingshock, aswellasaslightlybuilt-upheelandafullheelcupthatwillgivethekneeandanklemorestability. Awiseinvestmentingoodshoeswillpreventbilistersandthefoot, ankleandkneeinjuresandwillalsoenablethewearertorunonpavedorsoftsurfaces.

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