Your body had to workout to keep its new form(even though it was just a wish away, you just felt like showing off).
You wear your workout clothes and you realize that they have adjusted to your new body.
You want to get even bigger, but the usual way. You have to wish it.
"I wish my muscles would grow every time a guy looked at me"
It was evening which means that the gym will be quite crowded with mostly guys, so you are getting ready for a huge muscle buid up.
When you reach the gym the guy at the counter notices you. Then you feel your muscles swell a bit, but not to much for the guy to notice.
You head towards the threadmill, your new improved, ultra hot body would really attract attention there.