A muscular man taking a mirror selfie in a modern gym. Subject: A fit man with dark curly hair and a beard, wearing large black over-ear headphones, looking directly into the camera with a focused expression while holding a smartphone to capture his reflection. Clothing: He is wearing a simple black tank top that clings slightly to his skin due to sweat, highlighting his defined biceps and shoulders. Action: He holds a dark-colored smartphone in his right hand to take the photo, while his left arm is bent with a clenched fist near his waist. His skin is glistening with visible sweat on his neck and arms. Environment: The setting is a high-end gym with black rubber flooring, heavy-duty weight racks, barbells, and mirrors lining the walls that reflect other people working out in the background.