Vertical 9:16. One continuous five-second photorealistic shot. Natural stable anatomy, consistent identity, clothing and object shapes throughout. Gentle believable motion only. Clean premium composition, no cuts, no text, no logos, no captions, no dialogue. The selected adult woman age 30 wears a modest deep-green athletic top and full leggings. Standing upright in a clean fitness studio, she holds a small single dumbbell in each hand and performs one very slow short-range biceps curl. Front medium-wide shot, elbows separated, clear hands, no body twisting, stable equipment.