Steve was so excited, his heart was practically leaping out of his chest. If it worked on the rat, it would probably work on him! He felt a cool chill as he removed the syringe from his arm.
However, he knew that the nanobots' effect wouldn't work right away. He had used a slightly different formula then he had with the rat. Though the rat grew instantaneously, he had a remote that would cause him to grow.
He sprinted over to his workbench, almost tripping over various objects in his eagerness. Managing to reach it intact, Steve picked the remote up and examined it. He had made it look like a regular watch so people wouldn't notice it and he wouldn't lose it. Having made sure that all of the parts were in place, Steve latched it around his wrist.
Steve stared at the shiny silver remote. He could activate it by twisting the knob on the side, which would move the dial on the watch up a setting, causing muscle growth. No one would think it was odd to see someone just twisting a knob on their watch. It was perfect.
Steve needed to try out the device, and there was only one person he could try it out on: himself. Both excited and nervous that something might go wrong, Steve carefully took off his shirt, not wanting to rip it if he got too big.
Now all Steve had to do was decide how many times to turn the knob. If something went wrong, he didn't want it to be too major, plus people might notice if he hulked out overnight, so he decided to only turn it up a little bit. His hand shaking at his scientific breakthrough, Steve turned the watch to it's first setting and waited.
It only took a few seconds for the nanobots to take effect. Steve felt horridly cold before a soft, warm feeling took over. However, that too didn't last long before Steve was overcome by an intense but still enjoyable sensation.
Finally, the muscle growth commenced. With his shirt off, Steve was able to watch in awe as his biceps swelled up a bit, starting out as a barely noticeable bump and working its way up to a large mound of flesh, bigger than a lot of the guys on campus. His pecs pushed out of his chest, defining themselves and then going an inch or two more. Steve continued to be amazed as his stomach formed six perfect abdominal muscles, all clearly visible even if he was wearing a shirt. He felt his quads and calves push out against his jeans, straining them a lot.
Finally, the growth was over and Steve was left to gaze at the results. "IT WORKED! IT ACTUALLY WORKED!!!" he cried out, jumping around with joy. Steve walked over to a mirror and looked at himself. He looked more like a fitness model than himself.
Steve finally had the muscles he always wanted. Now he only had to decide what to do with them...