Amanda had to make a quick run to her first class, Algebra. Fortunately, she made it just before the bell rang. Keeping her head low, she walked briskly to the back of the class and sat down. She looked around carefully. Had anyone noticed she looked different? The fact that her shirt was hanging a good six inches above her pants was cause for alarm as that was against school policy. Of course the fact that the shirt was now so tight against her chest that her nipples were clearly seen was another problem.

“Damn,” she thought. “I shrank so much this morning I didn’t bother putting on a bra. And the last time this shirt fit I was 13. Now that I’ve added all this muscle and grown a few inches in height, I look like a college girl on Spring Break in search of a wet t-shirt contest.”

But to her relief, no one noticed and the class lecture started. Glancing around casually, she smiled that all eyes were elsewhere. At least for now. Looking down at her exposed stomach she sighed with pleasure as her fingers probed her six pack abs. Keeping her arm low, she tensed her fist and had to contain a soft giggle as a well defined lemon sized bicep balled up. Once again doing a quick scan of the room to make sure nobody was looking her way, Amanda thought about making her bicep bigger. And just like that, the muscle expanded like it was connected to an air hose. Only it wasn’t air, it was muscle. Hard, strong, female muscle. Within moments, her bicep was the size and shape of a baseball. A clear split quickly formed as the peak rose higher. Amanda nodded her head with satisfaction. “Cool!” She then thought about pulling the muscle back down a bit and soon her bicep was reduced to lemon size.

Smiling at her incredible abilities, Amanda decided to shrink back down to her original size for the moment. Because the class she used to fear the most was next. Gym! And she could hardly wait to show off her new ability. By the time she was done, there wouldn’t be anyone in school who didn’t know who she was and what she could do!

The bell rang and Amanda once again tried to look invisible as she walked toward her locker to dump her books and grab her gym clothes. She giggled as she headed for the gym locker room. Just what did she want to do first? Grow shapely and strong to show up the cheerleader or grow big bad muscles to show up the jocks? Maybe she could pull off both. And she began to wonder. Can I control how dense my muscles are so I can become wicked strong? Can I make my boobs bigger too?

As she changed into her gym shorts, athletic bra and t-shirt Amanda wandered out to the gym area, wondering what the teacher had in store for them. To her delight, Mr. Tucker was out sick and the assistant principal walked in.

“With Mr. Tucker out today, I suppose I will allow a free day for everyone. You can use the weight area or play some basketball. But no standing around talking, I expect some exercise.”

The class chuckled. A large group went over toward the weight area, since that was the best place to goof off, while a few people pulled basketballs and started shooting hoops. Amanda saw that Jake and his friends headed for the weight area. She also saw Samantha walk over there too. Other jocks were playing hoops. Amanda looked at both areas. Maybe she could grow taller and add a bit of muscle and show up the basketball players. Or perhaps it was time to grow more muscle again and see how much she could lift.

Either way, things were never going to be the same again. It was time to put on a show.