A bold flat-color poster design of a muscular adult man standing

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A bold flat-color poster design of a muscular adult man standing shirtless in an indoor gym, torso angled slightly right with arms relaxed at his sides. He wears dark grey athletic shorts with a drawstring waistband; bare chest and abdomen feature high-contrast color blocking under overhead fluorescent strip lighting against black ceiling equipment. The vertical portrait crop frames the neck to mid-thighs on the center-left., wearing underwear or swim trunks, covered genitals, no frontal nudity, a single uninterrupted photograph only, no written words or typography anywhere in frame, no captions, no app UI, no social-media post layout, no screenshot borders