Create a realistic muscle physique studio portrait

Create a realistic muscle physique studio portrait from the uploaded adult male photo. Keep his face recognizable and natural. Show him wearing `[FITNESS OUTFIT]` against a minimal `[STUDIO BACKDROP]`, with controlled side lighting, realistic muscle definition without exaggeration, natural skin texture, subtle sweat, confident calm expression, sharp eyes, tasteful fitness portfolio styling, and a clean 4:5 vertical crop. Insert discreet watermark in the lower right corner of the image, vertical text (rotated 90°), written "aipromptlabs.online", Calibri Light font, white color with low opacity (semi-transparent), medium size. Extreme sharpness on the face, fabric texture and typography of the letters. Shot on Canon EOS R5, 50mm f/2.8, studio light.