Aswithevery□pisodeofRunni□□M□n,the2013□421episodewasfilledwi□hase□□□s□□c□allenges□ndg□mesthattes□e□thewit,streng□□,andt□amwor□ofthecast□emb□rs□F□omi□tense□hysicalchallengestobrain-t□□singpuzzles□□hecastha□toworkto□□thertoovercome□b□tac□□sandemergev□ctorious.Thecompetitivespiritwashigh□sth□castmembers□hrewthe□□el□eswho□eheart□□lyi□toe□chchallenge,det□r□inedtoout□marta□doutperfor□thei□oppone□ts.□> Aswith□v□ry□pis□□eof□unnin□M□n,the20□30421□□isodewa□fille□wi□□aseriesofch□ll□□ges□ndg□m□sthattestedthe□it,st□ength,□ndtea□wor□□ft□e□as□members□F□□mintens□phys□□a□chall□ngestobrai□-te□□i□g□uzzl□s,□hecast□□d□ow□rk□ogethe□toove□comeobstaclesandemergevictorious.Thecompeti□ivespiritw□s□ighasthecastmembersthrew□hem□e□veswho□eheart□dlyinto□achchall□ng□,det□rminedto□ut□mart□ndout□□r□ormtheir□pponents.<□p> □swithevery□pisodeofRunningMan,the2□13042□epis□de□asfilledwithaser□es□fchallenge□□n□gamesthatt□st□dthewit,strength,□ndte□mworkof□hecastm□□ber□.Fromintensephysi□alchallen□estobr□in-□easingpuzzle□,□h□□asthadtoworktogethertoove□c□meo□□taclesa□d□mergevictorious□□hecompetit□vespiritwashig□asthecastmembe□sthre□th□mselveswhole□□arted□yint□eachchallenge,□e□er□inedtooutsmartan□o□tperf□rmtheiro□□onents. Aswithever□ep□s□d□ofRunningM□n,the201□04□1epi□od□wasfi□□e□withaseriesofchallenge□andgam□sthatte□t□d□hewit□□tre□□th,andteamw□□kofth□□astm□mber□.Fromintensephy□ical□h□□le□g□stobra□□□□eas□ng□uzzles,thecasthadtow□rktogethert□o□□rc□meobstaclesa□de□ergevict□riou□.□hecompe□itives□□ritwa□highasthe□astmem□ersthrewthemselv□swholeheartedl□in□oeach□h□l□e□ge,determinedt□outsmart□ndoutperformtheiroppo□ents. Aswithev□ryepisodeofRunningMan,th□2□13□□21episodewasfill□dwithase□i□sofc□allengesa□□□ame□t□□ttestedthewi□,□trength,□ndteamworkofthecastmembers.Frominte□sephysi□alchallengestobrain-t□a□in□puzzles,thecas□ha□towo□ktog□thertoo□ercomeobstaclesandemergevicto□ious.Thecompet□tivespiritwashighasthec□s□□e□bersthre□themselveswholehea□tedly□nto□□chch□ll□nge,determin□d□oouts□artandoutperfo□mthei□opp□nents.