Nate started walking towards the locker room, but couldn't get very far before the sounds of people's scared voices and of ripping clothes stopped him.
He had to grab on to one of the machines to keep balance because the transformation was making him too dizzy. He looked around and saw many other lifters looking at him with fear in their eyes. Even a huge guy who had been bench pressing over five hundred pounds looked at him, scared, when his feet tore through his tennis shoes! His feet had become black and a crest of thick flesh had covered most of it splitting it in two...he had grown cloven hooves! The pain was too much. A girl screamed in horror as he fell on his knees, hooves still growing and legs still becoming longer. He brought his hands to his face and could feel changes taking place. Suddenly his elbows were almost touching the ground! His arms had grown extremely long, and his hands extremely big, making him look gangly.
The hair continued to spread on his skin, covering every part of it in a thick hide that smelled. He smelled like an animal.
He managed to get up and noticed that despite a new stance given by his strangely malformed legs and newly grown giant hooves, he was inching in on the very tall ceiling! He was a skinny giant covered in hair!
People began to run away when another wave of pain hit him, making him tense every muscle in his body. They all convulsed and twitched as they began to shift and grow. First, he felt his neck become thicker. Every vein began to pop out as his neck began to swallow his head, which was also beginning to reshape. His brow and jaw grew much thicker, his teeth bigger, his nose wider, nostrils flaring like a bull's. He began to feel heavy as more of his upper body grew. His traps swelled and became part of his neck, so big it pulled his sleeveless shirt upwards, exposing a furry flat stomach. Nate took a step to the side and almost fell forward. His shoulders suddenly multiplied in size, and the top of his shirt couldn't take it anymore. It tore apart, leaving him with a shredded top tightening around a growing chest. His uneven shape was becoming almost grotesque. His ribcage expanded monstrously and his mouth pushed forward to accomodate new sets of much stronger teeth. Longer hair grew on his chin like a thick beard, and two sharp tusks pushed their way out of his lower jaw. Off-white horns grew mighty and thick.
He bellowed like an animal when the muscles of his back and chest took care of his shirt. He flexed his arms to try and stand the pain, only to feel them grow so enormous and thick that they were almost hard to bend! His wrists had become thicker than his thighs used to be, his chest bigger than the biggest bumpers in the gym. When the ridiculous weight of his upper body started becoming too much for his skinny legs, they exploded with dozens and dozens of pounds of bovine muscle. Gigantic hairy thighs burst through his shorts and he could immediately feel their power. Even his manhood had been enhanced with bovine qualities. Inside a patch of long hair, he could feel his huge rod ready to be used.
Even then, when he had already become a dark-furred minotaur with enough muscle to tear the place apart, a monster so terrifying that it made almost everyone in the gym floor run for their lives, the growth didn't seem to stop. He finally hit the ceiling, his powerful horns tearing through. His back widened even more, his neck thickened, his arms grew longer and larger. His legs were bigger than the columns holding the building together.
Finally the transformation was done. Nate had become a ten foot tall minotaur, and had the power to do anything he wished.