IDENTITY PRESERVATION INSTRUCTION:
Using the uploaded photo as reference, preserve the person's exact facial features, face shape, eye color, skin tone, and unique characteristics while transforming their body into an athletic post-workout appearance. Maintain the person's identity, facial structure, and recognizable characteristics throughout the transformation.

TRANSFORMATION DESCRIPTION:
Transform the person into a fit athlete immediately after an intense workout session. The body should show realistic muscle definition and athletic physique while keeping the face identical to the uploaded photo. Apply visible sweat on skin, slight redness from exertion, and natural post-exercise glow. The person should be wearing professional athletic clothing - moisture-wicking fitness shirt and athletic shorts or leggings. The transformation should look natural and believable, as if the person just finished a rigorous training session.

STYLE AND AESTHETIC PARAMETERS:
- Art style: Photorealistic, high-quality fitness photography
- Lighting: Dynamic gym lighting with dramatic highlights on muscle definition, rim lighting to accentuate physique, natural sweat sheen on skin
- Color palette: Vibrant athletic colors with cool tones (blues, grays, blacks) for sportswear, warm skin tones with natural flush from exercise
- Background: Modern gym environment with equipment in soft focus, or clean athletic studio setting
- Skin texture: Highly detailed with visible pores, natural sweat droplets, subtle skin texture from exercise
- Muscle definition: Realistic athletic build, not overly exaggerated, natural muscle tone and vascularity
- Hair: Slightly damp or messy from workout, natural athletic look
- Expression: Determined, confident, or slightly tired post-workout expression

TECHNICAL QUALITY PARAMETERS:
- High resolution, 4K, detailed
- Sharp focus on face while maintaining body definition
- Professional quality fitness photography
- Aspect ratio: 1:1 for portrait, or 4:3 for full body shot
- Ultra-detailed skin texture and fabric materials
- Cinematic depth of field with subject in sharp focus
- Natural color grading and professional post-processing

NEGATIVE PROMPT GUIDANCE:
Avoid: distorted facial features, unrealistic muscle proportions, blurry face, loss of likeness, unnatural skin texture, plastic-looking body, excessive bodybuilder bulk, cartoonish appearance, deformed anatomy, extra limbs, missing body parts, unnatural lighting, oversaturated colors, poor composition, low resolution, pixelation, artifacts

USER CUSTOMIZATION:
{additional_context}

ADDITIONAL TIPS:
For best results, ensure the uploaded photo has good lighting on the face and clear visibility of the person's features. The prompt can be adjusted for specific sports (running, weightlifting, yoga, etc.) by adding sport-specific clothing and equipment in the {additional_context} section. You can also specify preferred lighting conditions, background preferences, or particular athletic wear styles.