Photorealistic high-resolution medium close-up of a muscular man (100% face match) in a gym, slight low eye-level, front-right angle, shallow depth, blurred background. Performing left-arm bicep curl with black dumbbell (white markings), veins and muscle definition visible. Head tilted down/right in near three-quarter profile, eyes focused, lips parted, intense concentrated expression. Body angled left, left shoulder forward. Outfit: tight black athletic t-shirt with white “NIKE” logo, light blue athletic shorts. Bright directional light from top-front-left, highlights physique, soft fill. Background: blurred gym interior with dark equipment, strip lights. Palette: blacks, dark grays, muted light blue, warm skin tones. Mood: intense, athletic.