Flesh and blood is a common idiom that refers to human beings, especially in relation to their physical existence. To convey a similar meaning, we could use synonyms such as 'human beings', 'people', 'mortals', 'creatures', 'individuals', 'humans', or 'living organisms'. We could also use adjectives such as 'physical', 'real', 'tangible', 'corporeal', or 'material' to describe the nature of flesh and blood. Moreover, metaphors such as 'being made of meat', 'walking meat puppets', or 'animated flesh' are often used to describe the physicality of human beings. Ultimately, these synonyms and metaphors highlight the unity between our physical and spiritual selves, emphasizing the frailty and impermanence of our bodily existence.