May 25, 2016 Flex5 by PetroFitness Boot Camp, Personal Training, Workout Coach Brian Body Weight Workout @Flex5 May 25, 2016 Flex5 by PetroFitness Boot Camp, Personal Training, Workout Quick and easy body weight workout that can be done any time within any setting by Coach Brian @Flex5. Flex5 by PetroFitness