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Photoreal photograph of a shirtless man seated on a gym machine with his torso leaned back and hands resting on his thighs. The image is cropped to show only the upper body in a vertical portrait orientation, with an 896x1152 canvas size. He wears olive green athletic shorts and white crew socks. His physique highlights defined abs and thick muscular thighs. The lighting is bright indoor gym light with warm tones that create slight gloss on his skin, suggesting sweat or artificial lighting. The image quality is sharp with a natural sheen to the skin, emphasizing the compact athletic build and thick legs., shot on iPhone 15 Pro main camera, authentic smartphone computational photography, natural Smart HDR and true-to-life skin texture, vertical 9:16 Xiaohongshu lifestyle feed, bright clean everyday scene, unretouched phone photo with subtle sensor grain, trendy Chinese internet 网红 aesthetic, candid influencer energy