It was time for P.E. and John was a little excited for it. Now being female and having no place in the boy's locker room... Well John just had to go to the female locker room right? She had gotten something to change into, and went into the locker room. She found the older Kathy with a swimsuit she probably borrowed from the coach for her more mature form.
John announced herself by saying "Hi Kathy, Wonderful day in the girl's locker room right?"
Kathy a bit surprised for a second asked "John what are you doing here?"
"Coach brought me a loaner swimsuit. Considering I've got tits now we both figured having me in the men's locker room was a bad idea."
Kathy was uncomfortable with the only recently female John inside and said "Well.... ok close your eyes." Agreeing John closed her eyes as she changed into her swimsuit... and realized she was having difficulty with putting on a one piece without seeing the one piece.
"Um... Kathy a little help?"
"Ok... arms in front and bend them a bit... alright now to slide these up... Now that way is where the door is." John left and sighed... eventually Kathy would have to let him see everything in the locker.
Today was pool day for P.E. and Coach Alexis once a sturdy but older woman was now brimming with youth and strength. Her once withering muscles now lean and powerful, she grinned in her bikini that she had skipped lunch to go buy... At least that's what John presumed in actuality she just drank her normal meal replacement shake in the car. Sure she had to answer a quick question or two in the department store, but a "I forgot my swimsuit and I need one fast." was enough for the cashier who cared enough to ask, but not enough to think about it. Alexis had them swimming laps, and during a break John noticed Kathy was more tired than usual.
John asked "You alright Kathy?"
Kathy panting said "I just feel... more tired... I'm not that much older am I?"
Alexis walking around the pool keeping her eye on everyone noticed the conversation and said "I imagine your older self was less active, and you didn't do any stretches. When you get younger again you should exercise more and stretch." Kathy feeling the neglect nodded in agreement. Meanwhile the girl in the lane next to Kathy's finished... It was Zoe, she was a short girl that on land was a quick sprinter but in the water was struggling a bit to be fast.
Zoe groaned and yelled towards Kathy "You and your giant Body! So unfair in our race!"
Kathy surprised asked "We were racing?"
Zoe nodded "Yes and I want a rematch. I think I have a good idea of how to make it fair!" at which point some text appeared in front of John's eyes "Zoe Compartments: Oh Lord Chronos, please regress Kathy smaller so we may have an even swimming race!" John thought for a second and got a loophole to get Katrina back to normal... Just regress her back to her normal age and stop there. Alexis nearby saw the odd look on John's face and then Kathy regress back to normal.
Alexis asked "Jane, what happened?"
John said "Well... someone prayed, I got the prayer and Kat's now younger."
Alexis sighed and said "We'll have to set up a meeting about this with the Principal you know." John nodded meanwhile Katrina was stretching her arms and legs underwater while Zoe was complaining that Katrina wasn't really any smaller. Still the two had a rematch where Katrina beat Zoe again pretty badly. Then after P.E. was a quick shower to get the chlorine off, a dry session, and change back into normal clothes and the school day was over. Alexis was back in her teen clothes and the two went back to the school's roof where the staff would be regathering.