"Hey mom?" asked Olivia through the door her parents' bedroom door.
"What is it sweetie?"
"Promise not to freak out when I come through the door ok?"
"Of course sweetie, what's the matter?"
Olivia slowly opened the door and revealed her new body to her mother. Nicole had been folding clothes and, as Olivia entered, her expression changed from one of shock, to one of curiosity, to one of awe.
"Oh my..." she began "You..."
"I know! Pretty incredible, right?" replied Olivia, posing a few times for her mother.
"But... what? How?" stuttered Nicole.
"I'm not sure, but Rachel seems to have it all figured out. She changed as well, and thinks it has something to do with the milk we drank at the restaurant."
"Wow"
"Yeah, I feel so strong now!"
"Yeah, for a girl your age ... there's no humanly possible way you should have muscles that big. I'm so proud!"
Olivia smiled and hugged her mother, taking care not to hug too tightly with her new muscles.
"So mom, I was kinda thinking that maybe Rachel and I shouldn't go to school today. Just until Rachel has it all figured out."
"Of course dear, whatever you want. You're both well ahead on your studies anyway, and you look more than healthy to me. Healthier than you were before, in fact. Just make sure you ask your father as well."
"Thanks mom! You're the best!"
Olivia decided against going through the whole process of explanation again with her dad. Instead, she chose a different tack.
"Hey dad?" she called from outside the kitchen, where Josh was making breakfast "Can Rachel and I stay home today? We're feeling a bit strange and mom said it was ok."
"What, did that expensive restaurant give you food poisoning now t... I mean, uh, sure sweetie. If mummy's ok with it, then so am I!"
"Thanks dad!" she said merrily. She wanted to hug him too, but really didn't want to take the risk of explaining her changes twice. Not to mention the fact that Josh was often the more responsible one who would have reacted somewhat more strongly to her newly improved muscles.
Soon enough, Josh and Nicole carpooled to work, leaving Rachel and Olivia behind at home. Olivia would usually have been reading a book at a moment like this, but the whole event was far too exciting for her, so she stayed in Rachel's room. Still wearing half-ripped clothes from the previous night, Rachel was busy on her laptop, typing in all sorts of figures into some kind of spreadsheet.
"What are you doing?" asked Olivia.
"Setting this up for some data analysis. Since you're here, I figure you might as well help me conduct a few experiments."
Olivia perked up. "That sounds like fun!" she said "Does that mean I get to test out what this rad body can do?"
"Absolutely" replied Rachel "But first, there's a heap of other tests I want to run..."
For the next few hours, Olivia was Rachel's enthusiastic lab assistant, moving around beakers, sticking probes into strange liquids, measuring, weighing things, reading out numbers on strange dials on all the science equipment in Rachel's room. Occasionally Olivia would ask enthusiastically if Rachel was any closer to figuring out what was going on, and Rachel just ignored her, typing away at her screen before issuing another command.
"Alright, now time to investigate our bodies directly" said Rachel.
"Great!" exclaimed Olivia, before seeing Rachel approach with some glass plates "Uh ... what's that for?"
"For putting under the microscope" replied Rachel "I'm going to need a few skin cells from your cheek, one of your hairs, and a saliva sample."
Olivia pouted "What about the fun stuff?"
"Isn't this fun?" asked Rachel dumbfounded.
"Maybe for you" muttered Olivia, as she scratched her cheek a little on top of a plate.
As she did so, she noticed Rachel was doing the same. "For comparison" explained Rachel.
Olivia rolled her eyes and plucked out one of her hairs. As she did so she noticed her hair seemed a bit longer and silkier than it had been. Finally, she spat a little on the last plate, before handing them back to Rachel.
"Ok, time to do some analysis" said Rachel "I'm going to be staring into my microscope for a few hours recording what I see... you might want to grab a book or something."
Rachel wasn't kidding. She really did spend hours, staring into her microscope with incredible curiosity. Olivia, meanwhile, grew more and more impatient as the day wore on. She just had to know what was going on, how strong she was, and more intruigingly, how strong she was going to become. To pass the time, she read a fantasy adventure book, imagining herself as one of the heroes, battling gigantic dragons. Then, she made some lunch for Rachel and herself.
"Can we do the interesting stuff now?" asked Olivia while serving Rachel some sandwiches for lunch "I REALLY want to know how much I can lift."
Rachel rolled her eyes. "Alright, I suppose I've looked at everything else long enough"
Olivia cheered, as the two sisters munched down their lunch, Olivia in a particular hurry.
"So, do we want to go to the gym or..." began Olivia when they had both finished.
Rachel smiled. "I don't think we need to" she said, before opening one of her cupboards that Olivia had not seen inside for a while. Where Olivia had assumed there was just a stack of old bedsheets, was now a full weights set.
"Woah - where'd you get these!?" asked Olivia, looking around the weights like a child in a candy store.
"Weights are incredibly useful for scientific research" replied Rachel "You can use them for..."
"Yeah, actually, I don't care" interrupted Olivia, already taking the weights out of their storage and putting them in the room. Individually she found all of them, even the biggest ones, to be fairly light, which excited her. Less than a day ago even looking at these solid disks of heavy metal would have been incredibly imposing for the young girl.
"OK, so, let's start off with the easiest weight, and try a number of different exercises" said Rachel "I did a bit of research on this last night in case I had to experiment on myself, but with you it should be even easier. This way I can watch you and make sure there aren't any problems."
Finding a bar as well, she walked Olivia through the basics of how to perform moves like lifts and presses and other weight exercises. Olivia listened intently, making sure to remember everything.
"OK, are you ready?" asked Rachel "Let's go!"
Olivia roared into action, her gigantic muscles lifting the easier weights with absolutely no resistance.
"Very good - I'm going to add more weight at the end of each rotation you do ... let's just see how much you can handle..." commented Rachel, taking extensive notes.
Olivia kept going as Rachel added more and more weight. A few times Rachel told Olivia to take a break, but Olivia wasn't tired in the slightest, lifting the weights with ease for what seemed like hours.
After a while Olivia found that, as Rachel kept increasing the difficulty, she was in fact starting to become just a little worn out. Slowly, tiny little increment by tiny little increment, the pressure on the bar became more and more, before Olivia finally found herself really straining at long last.
"Keep going!" encouraged Rachel "You're doing great!"
Before long though, Olivia found herself actually having to rest between rotations, but she was really determined. She kept pushing and pushing herself until eventually, after one final deadlift, she collapsed on Rachel's bed, utterly exhausted.
"Urgh" she groaned "I can't... believe... I failed!"
Rachel chuckled and she finished writing some note, then sat down next to her on the bed.
"Sister, you just came really close to breaking a world record" she said reassuringly "And not a women's powerlifting record ... a MEN'S powerlifting record."
"What?" asked Olivia, suddenly impressed.
"Yeah" replied Rachel "I think you might officially be the strongest woman in the world! And don't forget, I'm still expecting your body to become even bigger and stronger. I'd estimate you've approximately quadrupled your net strength overnight, possibly even quintupled..."
Olivia laughed. "Me, the strongest woman in the world? No way!"
"What do you mean?" asked Rachel, confused "The data is quite clear..."
"I can't be the strongest woman in the world - that's pretty clearly YOU!" laughed Olivia "I mean, look at you! You're so huge!"
Rachel blushed "I don't know..." she said, looking away.
"Come on" insisted Olivia "Let's see how well you can do."
And so the experiment was repeated, this time with Rachel as the subject. Olivia was this time responsible for loading the weights, while Rachel told Olivia which ones to give her. Again, Olivia saw that Rachel had no trouble at all with the easier weights, but did start to struggle a little as they got heavier. More and more Rachel had to strain before eventually, she stopped.
"OK, add on that weight over there" said Rachel, almost breathlessly "If I lift that, then I'm unofficially the strongest human being in recorded world history."
With great anticipation, Olivia loaded the weight on to the bar, trembling at the sight of her super muscular sister's insane strength.
And sure enough ... very slowly and with a significant amount of effort, Rachel in fact lifted the weight proudly.
"OK, let's try a little more..." said Rachel "There's only one more weight left to add in my set. Let's see if I can lift that."
Olivia was positively salivating at how incredible Rachel's body was, and how her own body was apparently so close to it, despite its smaller appearance. After loading the weight, Rachel strained significantly, pushing with almost all her might, but eventually lifted it as well.
"That's got to be close to my limit though" said Rachel "Wow, I didn't realize I was this strong!"
"Yeah" said Olivia "Seriously, this is incredible!"