Start in a high plank position, wrists under shoulders, core engaged so body forms a straight line from heels to ankles. Bring right knee in toward ...SearchRunner’sWorld+ExclusiveStoriesDownloadTrainingPlansFindaDealGetExpertAdviceMeetRW+MembersShopSubscribeTrainingMarathonTrainingHalfMarathonTrainingHealth&InjuriesNutrition&WeightLossDailyCaloriesCalculatorBMICalculatorRunningShoes&GearGear&AccessoriesShoesWhattoWearToolShoeFinderBeginnerRunningTipsAdvancedToolsRunningPaceCalculatorRaceTimesPredictorAgeGradeCalculatorPaceConverterTrainingPaceCalculatorCaloriesBurnedCalculatorRunWalkPaceCalculatorRaces&PlacesRaceFinderNewsRunner'sStoriesTrailRunningTrailRunningGearWomenNewsletterFollowFacebookTwitterPinterestInstagramYouTubeWinUnitedStatesUSUKEspañaNederlandDoNotSellMyPersonalInformationEditions:USUKEspañaNederlandSubscribeSignInMyAccountSignOutTypekeyword(s)tosearchToday'sTopStories15,000MetersYieldsThreeNewOlympians2WobbleBoardExercisesforFootandCoreStrength3ClaytonMurphyWinsMen’s800MetersattheTrials4TheBestAmazonPrimeDayDealsforRunners5EllePurrierSt.PierreWins1500MetersatTrialsJuliaHembreeSmithOnewaytobecomeabetterrunnerisbyimprovingyourform.Todoso,you’llneedtodomorethanjustlogmiles.Enter:strengthtraining.Onemoveinparticular,themountainclimber,canhelpyoubuildastrongandstablecore,whichcan,inturn,improveyourrunningpower,efficiency,andposture.Mountainclimbersareaheroexerciseforanumberofreasons:Performthemoveasquicklyaspossibletogiveyourworkoutsaboostoflow-impactcardio.Sloweditdown,andyouchallengeyourcorestabilizationandhipflexion,whichisimportantforproperrunningform,explainsKellieWilliams,NASM-certifiedpersonaltrainerandBarry’sBootcampInstructor.Loopresistancebandsaroundyourfeetandyounowhaveaseriouslychallengingexercisethatbuildscoreandhipflexorstrength.Still,manypeopleperformthisexerciseincorrectly,soknowinghowtodoamountainclimberproperlyisimportantbeforebangingoutsomequickrepsduringyournextworkout.Improperformcancauseunnecessarystressonthelowback,makeyoufeelunsta