阅读理解
Walkingissosimpleandconvenientthatitcouldn’tpossiblycountasexerciseright?Wrong．Studyafterstudyshowsthatregularwalkingcanhelpyouloseweightandreduceyourriskofheartdisease．
ThestudypublishedinDiabetesResearchinClinicalPracticeshowsthatthebloodpressureoftheoverweightmenbeingtestedimprovedandtheamountofbodyfatgreatlydecreased．
That’sgoodnewsbecausewalkinghasnowbecomethemostpopularfitnessactivityintheUnitedStates．Convenientsimpleandgentleonthejointswalkingisperhapstheeasiestformofexercisetomaintain．Accordingtoasurveyfouroutoffivewomenwhostartawalkingprogramcontinuetowalkwhilehalfofwomenwhoattemptothertypesofaerobicexercise(有氧运动)suchasswimmingdropoutduringthefirstfewmonths．
Herearesomebasicsforwalkingexercise．
Walkatapacethatmakesyoubreatheheavilybutstillabletotalk．
Yourgoalfirstandforemostistowalkfivedaysaweek30minutesawalk．Dothatandyouaregettingthebase-levelamountofexercisethatresearchsaysshouldmaintainyourhealthandvigor(精力)．
Walkforaslongasyouarecomfortablethefirstweekevenifitisjusttoyourmailboxandback．Eachfollowingweekincreasethatamountbynomorethan10percent．
Starteverywalkwithfiveminutesofeasy-pacedwalkingaboutthesamepaceatwhichyoudoshoppingtogetyourbodywarmedup．Thencooldownattheendofeachwalkwithanotherfiveminutesofeasy-pacedwalking．Thisallowsyourheartratetograduallyspeedupandslowdown．
(1)
A．
80％ofthewomensurveyedarewalkingasameansofexercise
B．
50％ofthewomensurveyedwanttoswimasameansofexercise
C．
walkingismoreeasilymaintainedthanothertypesofaerobicexerci
