Edit this image very subtly and realistically. Slightly enhance the body musculature by adding minimal, natural-looking definition and a mildly athletic appearance. Do not change the face, identity, body proportions, pose, or anatomy in any way.

Preserve all original skin details exactly as they are, including body hair (chest, arms, abdomen, and any visible areas). Do not remove, add, or alter hair density or texture. Keep the skin texture completely natural with no smoothing, no airbrushing, and no artificial or CGI-like effects.

Maintain original lighting, shadows, and color tones precisely. Avoid any exaggerated bodybuilding look; the result should only suggest a lightly more trained physique while remaining fully realistic.

The edit must be completely undetectable, as if the image was originally taken that way, with no visible signs of manipulation.”