Nathan, an 18-year-old blond freshman, and his friend Rusty, a ginger-haired 18-year-old, both lean and athletically built, walked into the university gymnasium with a sense of new beginnings. It was the first week of classes, and the gym buzzed with the energy of students eager to start the semester strong. Both shirtless under their unzipped jackets, Nathan and Rusty’s toned physiques were a testament to their dedication to fitness, their muscular forms subtly highlighted by the gym’s bright lighting …