l3n0v0, gymmirrorcreator, photorealistic adult man taking a full-body mirror selfie in a modern gym after a workout, standing naturally in front of a large wall mirror, holding a smartphone vertically in one hand at chest height, his reflection clearly visible in the mirror, looking at his reflection with a calm confident expression, athletic natural physique, realistic body proportions, short textured dark hair, light stubble beard, wearing a fitted dark gray athletic t-shirt, black training shorts, white crew socks and clean white training shoes, a simple black fitness watch on his wrist, modern fitness gym visible behind him in the mirror reflection, dumbbell rack, cable machines, workout benches and dark rubber flooring, several adult gym members training in the distant background, softly out of focus, soft neutral overhead gym lighting, realistic metal equipment and accurate mirror reflections, authentic candid smartphone fitness photo, realistic natural skin texture, subtle phone-camera grain, vertical 4:5 composition, sharp focus on the man