Please create an extremely aesthetic image of a 20-year-old young man viewed from behind in a gym setting. The young man is wearing an oversized black polo that gracefully drapes over his shoulders, and he has a black urban-style cap worn upside down on his head. His posture exudes a serene confidence as he gazes at the variety of workout equipment in the gym. Despite his slender build, his body shows signs of strength and muscular definition in his arms and back. The lighting accentuates his youthful features, and the environment reflects an atmosphere of focus and determination in his pursuit of physical well-being.