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Rated: 18+ · Interactive · Fantasy · #1738662
A professional thief steals a female growth formula from a lab
This choice: Stephanie continues to grow bigger and stronger  •  Go Back...
Chapter #4

Stephanie continues to grow bigger and stronger

    by: Lvmsclgrls Author IconMail Icon
Her body nearly erupted with muscle, adding inches across her entire frame, from her calves to her thighs, to her abs, to her back and to her arms, but especially her chest. It was as if her body were a living nuclear power plant, supplying an unlimited supply of muscle and strength on command! There was little pause as Stephanie grunted and tugged against the weight, slowly and steadily bringing her arms together! Her top now groaned and ripped as her chest slammed forth five inches of pure pectoral power! By the time the bars reached she already was several times stronger and once she pulled the bars back, the stress of the weight was already melting away. A second rep saw the bars sail forward, slamming the bars together and hitting the stop harshly at the back of the machine. Stephanie growled.

“I said more! I want to get a work out!”

Jeff stammered. “That’s the top weight for this machine! You’re lifting 300 pounds!”

That fact should have surprised Stephanie, but she was hardly satisfied and dropped the weights back with a hard clang. “Then we need to find something else!”

Stephanie hopped off the machine and feeling the tingling still permeating her chest, flexed down, pushing her pectorals and muscle filled breasts forward, pushing the once form fitting top forward, exposing her deep muscle cleavage and straining the material. Her arms now looked like they belonged to a high end fitness girl and even her legs look impressive. Her abs were a solid six pack of muscle. What none of them knew however was these muscles were denser than any human ever had before. Denser than any being on earth. She was already as strong as Jeff or Bill and she had only been lifting for a few minutes!

With his eyes wide, Jeff pointed to the bench press machine. The one he thought was just for show, since there was no way this girl would ever be able to lift the weights already set on them. Hell, he couldn’t lift them. The bar held 2000 pounds and looked almost ridiculous. Stephanie smiled and quickly marched over to the bench and looked at Bill for some guidance.

“Uh, just lay down under the bar. We’ll spot you. You reach up and bring the weight down to your chest and then try and push it up. But this is over 2000 pounds. Nobody on earth has ever benched this.”

Stephanie ignored his extra comments and sniffed. “Sounds easy enough.”

Jeff and Bill moved to either side as Stephanie took her position, her feet dangling above the ground. Reaching up, Stephanie gripped the bar and with the help of the two large men pulled the bar off the rack. And as they slowly let go, Stephanie let out a pained grunt as her arms shook. But the pain and shaking were short lived as her muscles responded once again, building quickly in both size and strength. Her arms piled on muscles, popping and pressing outward from her forearms down her biceps and triceps. Her shoulders bunched and built up bigger. And her chest plowed forward, giving her the strength to hold the weight and the muscle to move it down. Inches of pectorals surged forward, stretching the material further and popping threads along both sides. By the time the bar was touching her chest her pectorals had risen another three inches and looked like twin volleyball sized monitors, thick and angular. Resting the bar on her chest caused Stephanie to wince and the bar dug into her muscles, pressing then down. But even this was soon compensated for as her body fueled her muscles with denser and stronger muscles! The bar soon moved upward by the power of her pectorals alone! Stephanie let out a pleasurable moan and releasing her grip, simply balanced the weight across pectorals now harder than steel and able to withstand over one ton of weight on a one inch thick bar! The top gave up the ghost and ripped completely along both sides, held against her sweat soaked skin by the bar resting on her twelve inch thick pectorals! With a happy sigh, Stephanie powered the bar back up, laughing at how light the weight already felt! As the stunned men reached out to grab the bar, Stephanie pulled it back down and with a light tap against her super powered chest, back up just as quickly. This time reveling in her new strength, Stephanie cranked out 10 reps before pausing.

“Ha! More weight than any man has ever lifted huh? Feels pretty light to me! Guess that makes me the strongest person to ever live then! And I’m just getting started. Why don’t you two press down on the weight and see if you can give me a work out.”

The men could barely comprehend what they were witnessing, but without any thought did just that, causing a slight grunt from Stephanie as she felt the added resistance, but then a quick giggle as she easily pushed the bar, and the men back up to complete her repetition. Before the men could even release their grip and reach the floor, Stephanie sat up, pushing the bar forward and sending the men reeling. They tumbled forward 15 feet along the ground and grunted. Stephanie giggled as she held the bar in front of her and pulled her leg over the side, hopping off the bench and tossing the bar a few inches into the air, and grabbing it above her head to reverse the grip. The ruined top fell to the ground, exposing fully Stephanie’s mega muscled upper body. There wasn’t an inch that wasn’t bulging with super strong, super sized muscles! Her abs were no less than a 10 pack of thick, insanely separated muscles across her narrow midsection. Detailed obliques pulsed up her side and out to a four foot wide back and twin, striated 20 inch thick, two foot wide each set of pectorals. She then brought the bar down to her sprinter thick thighs and smiled as the two men regained their sensed and sat back up.

“Apparently not, huh boys? But no matter. It’s time to try something else anyway. From what I read about earlier today, this is what is called a curl right?”

And with another grunt Stephanie began to pull against the bar, feeling the heavy resistance for a moment as her biceps now bulged to once un-thought of proportions as her strength increased to compensate for the stress, building up well beyond any 10 normal men in an instant! And just like any resistance she had experienced, the stress was soon reduced and her muscles grew even denser as they expanded. Her biceps exploded in size and power to 24 inches around as the bar reached her massive chest. Stephanie brought the weight back down and hissed.

“Still too light! Is there no weight that I can’t just lift once and grow so strong that it feels nearly weightless?”

Cranking out a few more easy lifts, Stephanie pulled her hands together, balanced the bar quickly and released the weight with one hand. She then brought the weight to her side and smiled at the two men staring up this 5 foot tall, 16 year old girl with more muscles now littering her body than any man alive and more strength than any 20 men! With another light grunt, Stephanie fought against the weight for a moment before her muscles once again built up to the challenge, growing denser, more detailed and stronger. With a knowing smile, Stephanie looked at the men and flexed up her other arm even as she began to curl the 2000 plus pound weight with her other arm. Both biceps exploded with she muscle the likes of which had never been flexed before. Like rising mountains, her biceps pushed upward and outward to 28 inches with her first flex and rep and then to 30 inches with her second! She then pulled the weight out at arm’s length and began performing double bicep flexes as though she were holding a broom stick! Each repetition made her stronger! Each flex added two inches of pure girl muscle to her arms!

Now laughing, Stephanie continued to pump her world record breaking biceps, completely enjoying her rise toward true super strength!

“I guess not! But pumping my mighty muscles seems to add enough stress to keep them growing bigger and stronger! How many tons do you think I can curl now?”

Stephanie continued to bring her forearm down and then back up, flexing down at each apex, adding more strength and size to her biceps with each repetition. Her fingers now dug into the bar and the weights began to sag on either end, not that Stephanie noticed, since the one ton was nothing more than air to her now. At 36 inches around, her biceps were near her wrist. At 40 inches around her bicep had pushed her forearm to vertical as not only were her bicep bulging up and over her football sized shoulders and up to the top of her fists, but they were now so wide at the base that they were running out of room to expand anywhere but up! Now biting her lip, Stephanie continued to pump her magnificent muscles. Up and down her forearm traveled, smacking into her growing biceps with every flex! By the time her biceps had reached 50 impossible inches around with the peaks up to the top of her head, Stephanie gave the bar one last squeeze and pinched the steel in half, sending both halves crashing to the ground. Laughing again, Stephanie held her pose for a moment longer.

“So boys, it looks like I’m not just the strongest person on earth, but I’d have to say I’m the most muscular too!”

Releasing her flex, Stephanie tossed the small shard of compressed bar to the ground and placed her hands on her hips.

“But that still leaves of with the problem of me getting a work out. Any ideas?”
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