Nano Banana Pro JSON prompt for a gym fitness portrait

{ "image_prompt": { "subject": { "description": "young woman sitting on a gym machine inside a modern fitness center", "face_preservation": true, "pose": { "body_position": "seated comfortably on chest-press machine", "hands": "right hand bent with fingers resting near her lips, left arm relaxed on machine handle", "expression": "soft confident smile with slightly playful gaze into camera", "posture": "relaxed upright posture, legs resting naturally" }, "appearance": { "hair": { "color": "dark brown", "style": "long, voluminous waves flowing over right shoulder" }, "clothing": { "top": { "type": "black sports bra", "fit": "snug athletic fit showing midriff" }, "bottom": { "type": "black high-waisted leggings", "fit": "form-fitting athletic material" } }, "accessories": { "bracelet": "simple gold bracelet on right wrist" } } }, "environment": { "setting": "modern indoor gym with mirrored walls", "details": { "equipment": [ "chest press machine", "various gym machines in background" ], "flooring": "wood-textured gym flooring", "walls": "full-height mirrors reflecting gym interior", "lighting": "soft overhead LED lighting with warm ambient accents" } }, "photography": { "style": "clean lifestyle fitness portrait", "framing": "mid-body shot centered on subject with gym environment included", "camera_angle": "slightly eye-level frontal angle", "quality": "high-resolution, clear indoor lighting", "color_tone": "neutral, modern, slightly warm highlights" }, "composition": { "focus": "subject sitting confidently on the gym machine", "background_depth": "reflections in mirrors add visual depth", "negative_prompt": [ "altered face", "incorrect hair color", "missing gym equipment", "distorted mirrors", "extra people", "watermarks", "incorrect lighting" ] } } }