Muscles glistening, a gym rat powers through a solo workout, his loose shorts barely containing his throbbing cock. He grunts, feeling the heat rise, and begins to stroke himself, his pre-cum slicking his shaft. The room fills with the scent of sweat and precum as he picks up the pace, his body tensing, and then, with a moan, he loses control, spurting his load onto the floor, a sticky surprise in his otherwise disciplined routine.