Aswitheveryep□s□□eofRunn□ngMan□the2013□421episodewa□filled□ithaseriesofchalleng□sandgame□that□e□ted□he□i□,strength,andte□mworkofth□castmembers.Fro□intensep□ysicalcha□□enge□tobr□i□-t□asingpuz□les□□□ecasthad□oworkto□ethertoove□comeobs□acles□ndemergevict□rious.Thecom□□titivespiritwa□□ighas□hecast□emberst□rew□hemselvesw□ole□earte□□□□ntoeachch□l□enge,deter□ine□toou□sma□t□ndoutpe□fo□mt□□iro□po□ent□□ Aswit□□□eryep□so□eofRunn□ngMan,the2□□3□421epi□ode□asfill□dwithaseriesofc□□llengesan□gamestha□testedthewit,strengt□,andte□m□orkofthecastm□mbers.From□nten□ephy□i□alchal□engestobrain-□easingpuz□□es,thecast□adtoworkto□□thert□o□ercomeo□staclesandemerge□□ctoriou□.□hecomp□titivespir□twashighasthecastmembe□sth□ew□hemselveswhole□earte□lyintoeachch□ll□□ge□de□□□minedtooutsmartandout□er□ormtheiropponen□s. Aswitheveryepisode□fR□nningMan,the20130□21□pisodewas□illedwithaseriesofchalleng□s□nd□amesthattestedth□wit,st□en□t□,a□dtea□workofth□castmembers.Fromintenseph□sicalcha□lengestob□ai□-teasing□uzzles□the□□s□hadto□orktogeth□rtoov□□c□me□□staclesande□e□g□victor□o□s.Thecompetitivespiritw□shighasthecastmembersthrewth□mselveswholehe□□tedlyin□oeachc□a□□enge,de□erm□□edtooutsmartandout□□rfo□mthei□oppo□e□ts. A□wit□everye□isodeo□Runni□gMa□,th□20□30421episod□wa□filledw□□haseri□sofch□llengesan□ga□es□□att□s□□□thewi□,stre□gth,and□□amworkofthecastmemb□rs.Fromintensephysi□alchalleng□stobr□in-□easingpuzzles,the□asthad□□w□□ktoget□ertoo□erc□meobstaclesa□demergevi□torious.Theco□pe□itivesp□ri□washigh□□thecastmem□□r□□hrewthem□□lv□swholeheart□dl□int□eachch□l□enge□□eterm□n□dtooutsmartand□utp□rform□heiropponents□□> Aswith□v□ryepi□odeofRunn□ng□an,□□e□□130421epi□o□ewasfille□wit□aseriesofchall□nge□andgamestha□tes□edth□wit,stren□□□,□□dteamwo□kof□hecast□e□bers.□rominte□sephys□calchall□ngestobrain-teasingpuzz□es,thecasthadtoworkto□ethertoove□□om□obstacle□ande□e□□evic□orio□s.T□ecompet□□ivespi□□twashi□hasthecastmembersthrewthemse□veswholehe□rted□yi□toeachchall□□ge□de□erm□ned□oouts□artandoutperformtheiropponent□.□>□p>As□ithe□eryepisodeofRunni□gMan,the20130421□pisodewasfil□□d□ithaserie□□f□hallengesandgamesthatteste□□hewit,□tr□ngt□,andtea□workofthecastmemb□□s.Fromi□ten□ephysicalcha□□en□est□□□□□n-□ea□i□g□uzzles,thec□s□hadto□or□toget□□rtoo□erco□eobstacle□andemergevictori□us.Th□competi□ivespir□twa□highasthecastmembersthre□t□em□elv□swholehe□rtedl□in□o□achchal□enge,determinedtoo□tsmarta□dou□perf□rmtheiropponent□.<□p>