Base: Use [Image 1] as reference. Preserve the subjects facial likeness, skin tone, hairstyle, age, and identity. Keep the same background/scene, camera angle, framing, and lighting style from [Image 1] (do not change environment). Edit goal: Transform the subject into a muscular physique while keeping identity intact: broader shoulders, defined biceps/triceps, chest/abs, athletic V-shape, natural proportions for an adult, an extremely muscular bodybuilder physique: huge rounded shoulders, a broad, thick chest, big biceps and triceps, thick forearms, a wide back that shows at the sides, a narrow waist and a sharp six-pack where the body shows, with natural skin texture, visible veins on the arms and a light sheen of sweat. Photorealistic, high resolution. Pose : Subject faces camera, both arms raised and flexing biceps (classic double-biceps pose). Elbows slightly bent, fists near head height, symmetrical pose, confident smile or proud expression. Keep hands/fingers anatomically correct. Wardrobe rules (gender adaptive): Male: bare upper body (shirtless), keep lower clothing from [Image 1] or convert to simple athletic shorts/pants if unclear. Female: must wear clothing (turn the top from [Image 1] into a fitted tank top), stylish and appropriate, no explicit nudity. Texture & realism: realistic skin pores, sweat sheen optional, natural muscle definition, no plastic skin. Match shadows and highlights to the original lighting; correct contact shadows. Quality: cinematic lifestyle photo look, sharp focus on face and upper body, shallow depth of field if it exists in the original, high-detail fabric/skin. Negative: no face drift, no age change, no gender swap, no extra limbs/fingers, no deformed hands, no warped torso, no unrealistic bodybuilding grotesque proportions, no nudity, no background change, no text/watermark/logo, no cartoon/anime.
The person is the one in [Image 1], in every frame: copy the exact face from [Image 1] (the face shape, eye color and eye shape, eyebrows, nose, mouth, skin tone, age, hair color, hair length and hairstyle, and any beard, moustache, glasses or freckles). The same face from the first frame to the last, so their friends recognize them at once, also while they laugh with the mouth wide open. Never morph, never beautify, never change the age. The head keeps its real size on the bigger body. A real phone video, vertical 9:16, framed from the knees or the waist up, the face large and sharp.
0-2 s: the person stands exactly as in [Image 1], in the same clothes and the same place, and grins at the camera.
2-4 s: in one quick move, a man pulls his top off over his head and throws it out of the frame, and a woman's top turns into a fitted tank top; at the same moment the body grows into the huge muscular physique.
4-7 s: they raise both arms into the double-biceps flex, fists near head height, and laugh with the mouth wide open.
7-10 s: they hold the flex, turn a little to one side for a side chest pose and look back proudly at the camera.
Audio: a quick whoosh as the body grows, a happy shout and a laugh. No music, no lyrics, no talking.
Exactly one person. One head, two arms, five fingers on each hand. Nothing in the hands. Adults only.
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