Actually, there was no "first person", since the phenomenon was happening all over town. So how about we just focus on a selection of characters instead of everyone?
Sarah McMillan was currently being embraced by her boyfriend Biff Meadows, star quarterback of the high school football team. So he was noticeably muscular. But not for long.
As he held his girlfriend, he began to feel weaker. And Sarah was feeling bulkier. Why was that? Biff looked down at himself and freaked out. He had just lost half of his muscles! And ... and Sarah's muscles had doubled! What the hell was happening?
He let go of Sarah and stumbled backwards, falling haphazardly on the football field bleachers. Sarah turned around and looked at him with more fierceness than usual. "What the hell's your problem?" she asked.
Biff blinked. Was he imagining things or was Sarah's hair shorter? No, he wasn't seeing things. Sarah's hair was shorter. And his ...
He reached up and felt that his hair was a little longer. Not long like girl's hair, but it was at least two, maybe three inches longer than it should have been.
How could this happen?