Crossword clues for Flex the muscles 8 letters:EXERCISEFlex the musclesPSOASHip-flexing muscleTRICEPMuscle flexed when you straighten your armILIACIThigh-flexing musclesBICEPSO ften-flexed musclesBISMuscles flexed by Popeye, for shortARRAYGUNSFlex muscles in a pirate gym?BICEPMuscle flexed in a WWII "We Can Do It!" posterBICEPMuscle to flex, informallyMSOLYMPIAWoman who flexes her musclesPSOASMuscle that flexes the trunkBENDSFlexes, as a muscleSTRIKINGAPOSEFlexing one's muscles, perhapsPOSEFlex one's muscles, maybeSMILESFlexes one's zygomatic musclesPECSMuscles in a flex-off