Finally, thinking that it would nicely show off his newly developed body, Johnny decided to put on the blue muscle shirt that was lying on the floor next to a chair in the corner. When he picked it up, Johnny was surprised to find how warm it was to his touch - almost as if somebody had been wearing it only a few seconds a go. He wasn't sure what fabric the shirt was made of, but it felt soft and would probably be very pleasant to wear.
Johnny put on the shirt and stood in front of the mirror that was next to the chair where he had found the shirt. The shirt was a perfect fit, and it the way the fabric stretched across his athletic build looked really quite hot - so hot, in fact, that even Johnny himself was slightly turned on, as a growing bulge below his waist-line confirmed.
Absent-mindedly, Johnny began to trace the outline of his pecs through the fabric with his left hand while he flexed his right arm in order to better admire his biceps. He was surprised to see how big the mound of muscle turned out to be - almost as if a tennis ball had been stuffed under his skin. He struck a double biceps pose, and though he might have felt a little silly, he certainly became even more aroused by the sight of his newly developed muscles. It was a pity that he couldn't spend a little more time admiring himself.
Just when Johnny had decided that it was time to find some pants and start looking for the other guys, however, he suddenly felt a strange kind of warmth spreading over his entire body, emanating, it seemed, from the muscle shirt that tightly hugged his chest. The feeling intensified with each passing second, and the heat in his body became almost unbearable. Johnny struggled out of the blue shirt, threw it across the room - and realized that the feeling was gone.
Still wondering why on earth he had suddenly felt so hot, Johnny noticed another strange sensation, as if an enormous pressure was building up inside of him. He staggered backward against the wall, and for a second feared that he might pass out again. He tried to calm down and had almost succeeded in doing so, when an unsettling noise caught his attention. Johnny wondered where the little cracking, crunching sounds were coming from, but then realized that they originated inside of him, just as the strange pressure that made him feel as if he was about to burst. Johnny went back to the mirror, hoping that he might find out what was wrong, and one look was indeed enough to tell him what the strange sounds and sensations meant. Johnny didn't understand why or how it was happening, but clear that his muscles had started to grow.