Helluva Workout - Commission for anubiis_werewolf

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Rose purchases a strange supplement from a store that just opened, unaware that it's going to transform her into giant muscle monster with a huge cock.

Commission for anubiis_werewolf on FA


Rose was on her way to the gym where she was planning to perform her daily workout. She was in a gray sweatshirt and sweatpants, something that she would remove once her strenuous workout had begun. It was a common sight in that part of town to see the hulking houndoom wander down the street, minding her own business and waving at people whom she recognized. The folk who lived on that block had grown blind to her presence, just like they would any other normal citizen who lived there.

People who didn't live there, however, were struck by the sight of the tremendous pokemon wandering the streets like some wayward giant. She stood head and shoulders above most men, not including the giant white horns that sprouted from her crown and curved down beneath her ears. Her fur was onyx black, sporting a fiery red underbelly. From head to toe she was bulging with shredded muscle that seemed ready to rip through her fur and clothes every time she moved. Each individual muscle and fiber stood out from the ones next to it. Her physique was the envy of bodybuilders and strongmen everywhere. Thighs like barrels ballooned above her knees and biceps like small boulders burst from her arms. Crescents of white armor clung to the sides of her trunk and around her collar like ribs. Her large red breasts managed to stand out, even amongst her explosive jungle of muscle. She wore her burning auburn hair long, letting it reach her lower back. In spite of her monstrous frame and strength, she had a friendly face that possessed a kind smile and expressively red eyes.

Her huge muscles weren't by accident. She worked out with religious regularity, frequenting the gym and using everyone of its most challenging machines and weights. Whatever substance or technique was necessary to maintain or improve her musculature was employed. Seldomly did she ever have workout partners or trainors. They only slowed her down. None of them would admit it, but many men who shared a gym with her felt intimidated and outdone by her presence. Some of them outright canceled their membership, falsely claiming that the gym "wasn't offering them what they needed." The gym had everything. It was Rose who made them leave.

That day she waltzed down the sidewalk to the gym, smiling genially, unintentionally making people step aside off the sidewalk, was like any other. She had her routine for the day already planned in her head, as well as the ones for the rest of the week. She would go to the gym, workout for three hours, then leave. No problem. She came to a stop when she passed one of the buildings on the way to the gym. It was a small shop at the end of a strip that had been vacant for the past several months. It had recently been rented out. She didn't pay much attention to it until now when she saw what it was. Bigger and Badder! was the name of it, written in gaudy bold letters above the front entrance. The font was cracked like a rock. Standing above it was the logo, a machamp flexing his four arms.

She looked inside. Lining the shelves were tons of bottles and jars containing what looked to be various supplements and protein powders. Hanging from the walls were various bodybuilders and strongmen who endorsed their products. The few that were close enough to read were brand names Rose didn't recognize: MoGrow, Biggun, Swoll AF, Get Big, and the one that caught her eye the most, Testoster-Grown. She guessed that they were all either knock off brands or products original to the store. Either way, she had to check the place out.

She stepped through the front door to the jingle of a bell. On her right was the cash register. The shopkeep, an overly muscular Emboar who was reading a magazine, stood behind it. He perked up at the sound of the bell and looked up to see Rose. He smiled. "Come on in! Have a look around!"

"Thank you! I will!" She did a quick scan of the selection surrounding her. Her gaze fell back on the Testoster-Grown. "I saw you guys just opened here. I was wondering, are any of these your original products?"

The emboar made a proud smile. "That's right. Everyone of them. Any kind of growth you're looking for, we've got it. And I mean any growth."

"Any growth?" she asked with an inquisitively raised brow.

He nodded. "Any."

Rose didn't think there were many more kinds of "growth" other than the muscular kind. What else did they expect their stuff to build? Height? Fat? Dick size? Rose had plenty of the former, didn't want any of the second, and simply had none of the latter to grow. Walking down the aisles of supplements and powders, she started noticing some very wild claims. Grow a foot in under a month! Increase your cup size by three whole letters! You'll be bending the bar in no time! Not even the shadiest of websites had advertisements for supplements and pills so audacious and wild. As she neared the further end of the shop, she reached the more lewd products, one that outright showed images of muscular men wielding giant phalluses. Rose had to scoff. Like any of this shit would actually work.

Just as she was losing faith in whatever validity the store still had, she came back around to the product she had noticed earlier. Testeoster-Grown came in a six-pack of towering 24 oz cans, connected by tough plastic rings. The aluminum was colored a shiny black. The logo was a tall, unsurprisingly buff man whose height reached both ends of the can. Next to him was the name, and beneath that, the slogan: "Work Out Like a Real Man!"

Rose pursed her lips at the sight of it. What was it about this one that caught her eye above the rest? She picked it up with her finger hooking into the plastic holder. The cans were heavy, probably holding something more dense than your average liquid. There were very few labels other than the title and slogan. The nutrition facts were brief, only stating the calories, sugars, and the active ingredients which were a bunch of multi-syllable chemicals she couldn't make heads or tails of. A glance at the price tag showed that it was only $24, cheap for such a package.

With her curiosity nagging her, and a deep belief that walking into a store without buying anything was rude, she carried the cans to the front desk and plopped them down with a solid clunk. "I'll have these!" she told the emboar.

"Alright!" He pulled out a scanner gun and beeped the cans.

"Do you know what this one does? I saw so many crazy labels on the other ones, but this one looks pretty tame."

He glanced up at her from the cans. He didn't speak at first, looking as though he was debating whether to tell her the truth or not. Whatever that was, he wasn't about to lose a badly needed sale. "It's your average supplement. It'll boost your T like it says, plus help you with your gains. I'd recommend it."

"Thanks." So long as it doesn't kill me or anything.

"Just uhh..." he said, then paused. "Don't drink more than a whole can in a day. Half before you start your workout, then half when you're done."

Rose frowned. "Why's that?"

"Just... Your body won't absorb more than a whole can in one day, there's so much crammed into it. It's best to take the pack over a week, or longer."

"Oh, OK." Rose wasn't sure how she thought of that. Did he think she wasn't capable of benefiting enough from one can? Was it because the can boasted being for "real men"? She appreciated his concern, but she wasn't the kind of woman to be any kind of bothered by stuff like that. I mean, just look at me. I could tear you in half. "Thanks. I'll keep that in mind."

The emboar bagged the pack and slid it across the counter to her. "Here you go. Thanks, and have a nice day."

She took the bag. "Yeah, you too." With her newest purchase swinging from her fingers, she continued her walk to the gym which was only a few blocks away. She made it and stepped through the automatic sliding doors, entering a realm teeming with barbaric pursuits of strength. The gym was a sprawling complex full of giant machines and benches. There was a boxing ring in the center, a row of punching bags and treadmills. There was a separate room for exercise bikes and even a pool. The gym had everything, hence why it attracted so many men and women blasting their muscles in order to be the biggest, strongest, and fastest person there.

Rose certainly achieved the former two, so she wasn't at all perturbed by the dozens of burly men huffing, grunting, and sometimes screaming under the punishing weights they threw themselves behind. She could outdo them all in virtually every category, and they all knew it. When they saw her walk past, some of the men grew quiet, something she secretly enjoyed. She went to an open squat bench and put her stuff down. She peeled her sweatshirt off and casually took off the pants, leaving her in a much more revealing red bikini that matched the bright color of her underbelly. The cups of the bra were stretched taut around her terrific breasts. The bottom was pressed so firmly into her crotch that it sank into the crevice of her womanhood. It was an outlandish display of body that would've gotten her kicked out of any other gym. Nobody had the balls to say anything to her, though, not when she was the gym's most capable athlete and loyal customer.

The bar waiting for her on the squat bench was racked with 350 pounds already. A nice weight, for sure, but not even a warm up for her. But before she got to putting the right weight on the bar, she reached down for the bag holding the Testoster-Grown. She pulled the pack out, then tore a can off of its holder. She cracked the thing open with her finger claw, pushing the strip in like it was a button. Sktt! Carbon bubbles gurgled from the hole, sizzling around the tip of her finger. She gave it a curious whiff. It smelled like any other soda, sweet and crisp. It better not be just some cheap soda. Then again, I only paid $24 bucks for it. She brought the lip of the can to her mouth and took a swig.

Thick liquid the consistency of nectar guzzled from the hole and poured into her mouth. It was heavy and sweet, pouring past her tongue and blessing it with its succulent taste. She swallowed the first gulp and lowered the can. "Ahh," she sighed. "Not bad." She took a few more gulps. She could feel it settling in her belly with each swallow. In the back of her mind she heard the emboar's warning not to drink more than half prior to a workout, but she couldn't bring herself to stop. This shit was too good! She reached the halfway point, then the third, then the quarter. Her head had been thrown back a full minute by the time the last drop of delectable goodness drained into her gullet. She lowered the can with another satisfied "Ahh," then crushed it in her paw. "Damn!" Already she was feeling invigorated. The crumpled aluminum in her fist felt like rice paper. Bend the bar? She felt like she could make a pretzel out of it. The urge to crack another one open was strong, but the need to work out was even stronger. There was a whole set of weights in front of her ready to be lifted. She wasn't going to make them wait any longer.

After putting the crushed can in the bag with the rest of the pack, she went to a nearby stack of weights and hoisted two pawfuls of lead disks, each one weighing 50 pounds. She screwed them onto the bar two at a time, bloating the weight up to 550, much more than what she weighed herself. Her normal warm-up was 450, but right now she was feeling extra bold. She went to a nearby bowl of chalk and slapped some onto her palms. She stepped up to the bench and squatted underneath the bar. She pressed her shoulders into the underside of it and got a good grip. She set her feet apart, took a few deep breaths, then finally stood up. The bar came up with her and off of the hooks. The stainless steel bar sank into her trap muscles. Her nostrils flared with each measured breath. Although she remained steady, it was still enough to make the veins in her legs rise to the surface like the fissures of an earthquake.

She did a count in her head. One. Two. Three. Rose fell into a squat, hovering her enormous buttocks just above her ankles. Just as smoothly as she went down, she came back up. One, she counted mentally. She went back down, then back up. Two. Down, up. Three. She went on and on at a steady tempo, never going faster or slower on any rep than the one before it. The weight on her shoulders was a beastly one, far outdoing what half of the men in that gym could've dreamed of ever squatting even once. Here she was warming up on it, and it was still a full hundred pounds heavier than her usual warmup weight.

She approached 20. 17. 18. 19. "20," she huffed aloud as she stood up for the final time. Breathing through her mouth, she stepped back into the rack and carefully set the bar back down on the hooks. "Whew." She came out from underneath the bar and stood up. She did a brief shimmy of her shoulders, feeling lightweight. She frowned at the bar. Was that it? It was only a warmup, but it still felt short of what she was used to. She double checked the weights on the bar and confirmed that she had in fact put on 550. She was never good at guessing weights by feel, but it felt like she hadn't lifted any more than 300. Was it the Testoster-Grown? She looked down at the plastic bag. She could just barely see the crumpled up can she had shoved inside of it. This must be the real deal. Holy shit. She patted her thighs and buttocks. They felt taut as they usually did after a workout, but now they seemed to have an extra layer of dense padding. In fact, much the same could be said about the rest of her body. She slid her paws around her torso and down her arms. It all felt like it had gone through some level of stretching and pulling, even though she had barely worked those muscles. Her bikini top felt stretched atop her breasts. The seat of the bottom had sunk deeper into her ass crack.

Had she really gotten bigger after just that? If she had, it wasn't visibly noticeable. That didn't matter. All she knew was that she had to try more of that Testoster-Grown. She bent over and pulled out another can. She noticed that the big 24 oz container felt smaller in her hand, closer to a regular 12 oz. When she pushed the opening in with her claw, she noticed that the tip of her index finger would barely fit inside. She would've spent more time marveling, or even experiencing some level of concern, if she wasn't so pumped for more growth. She threw the can back and drained it in only a few hearty gulps. Ulk. Ulk. Ulk. She finished it off with a growl and crushed it like a bug. She didn't bother putting it away in the bag or in a trash bin. She let the crumpled can fall to the carpet floor and went straight for the weight rack.

Warmups were over. It was time to get real. She twisted off the 50 lb disks off the bar and put them back on the weight rack. She came back with an armful of 100 lb disks. When she was done unloading them on the bar the entire thing weighed 900 lbs, a weight none of the men in there had ever lifted. People working out nearby stopped and noticed. The two guys sparring in the ring took a break and leaned on the ropes. People running on the treadmills slowed the belt so that they could focus better. Rose didn't mind a single one of them. It was time to get busy.

She got into position under the bar and hoisted it up. She hardly even grunted. The ends of the stainless steel bar sagged under the weight of the disks, acting like rubber. Without any countdown, she fell into a squat, then stood back up as if totally unencumbered. Up and down, up and down. Her body moved like clockwork. Her normally kind face was twisted into an angry scowl. Though the effort was minimal, she felt like her entire body had to be thrown into a turmoil. Her grip on the bar was tight like iron. Her toe claws curled and scraped into the carpet. Her teeth were in a grit and her lips were pulled back. She went as hard as fast as she could, manipulating that 900 lb bundle of lead and steel like it was nothing, yet it still wasn't enough.

Everyone was watching now. The treadmills went still and the punching bags did not sway. Someone ran into the bike machine room to tell them what was going on. People who had been swimming toweled their dripping bodies off while watching the terrific feat of athleticism unfold in front of them. The entire gym was silent except for Rose's steady huffs and grunts. Nobody knew how many squats she had done, not even her. She had lost count a long time ago. Estimates went into the dozens. Nobody knew if she would ever stop. They pictured her pumping under that bench for the rest of eternity, her hair having turned gray and her face gone wrinkly.

Then a gasp rang out through the gym, startling everyone who heard it. Someone pointed at her and muttered something to their friend. That person gasped too. Other people started noticing. All eyes watching her went round. Some people looked away, others simply couldn't. The pair of men closest to her were so appalled that they got up and scurried away. It was happening in front of their very eyes, yet not one of them could believe it.

Growing out of Rose's bikini bottom, slowly but ever so surely, was a penis.

It bulged out the cup to the point of pulling the g-strings off of her fur. It hung forward like a massive fruit bundled inside of a net, stretching its container to the point of being forced to fall to the wayside and leave her cock growth unimpeded. Like the muscles currently swelling across her body, it was wound with veins thick like straw. The shaft was black like her fur. Her scrotum was the same red as her underbelly, carrying a pair of orbs like tennis balls, and still growing. Whatever could've been identified as female organs were completely gone, giving birth instead to a phallus more masculine than anything the men in that gym carried. For all intents and purposes, Rose was now a man, and would identify himself as such shortly.

But first he had to stop working out, and that simply wasn't happening. He still squatted like nothing was happening, and the rest of his body was going through the motions of adapting. His shoulders broadened. His bones stretched. The horns on his head tightened their curl and thickened into something like a normal person's thigh. His previously wholesome breasts withered into his chest, flattening out into a pair of rocky pecs the size of televisions. His throat bulged into an Adam's apple. His huffing voice cracked, then turned into a baritone. Given the exigent existence of his leviathan cock, only a few people noticed her sudden increase in height and muscle mass.

At last he came to a stop, but only because he had grown bored. 900 simply wasn't going to cut it anymore. He had to pump some real iron. He casually lifted the bar over his head and back down on the rack. "Whoah..." he said upon noticing how far down the hooks seemed from earlier. He looked at his paws and saw how massive they had gotten. When he let go of the bar it left behind a pair of imprints in the steel. The whole thing had bent into a crescent like a longbow, now useless to just about everyone else.

Then he felt the odd sensation of something hanging from his crotch. He looked down. "Oh!" was all he had to say to the sight of such a barbaric pecker hanging out from the side of her bikini. A queer mixture of panic and awe swept through him. Naturally he was appalled at the sight of his womanhood having been evicted in place of such a huge cock, but at the same time he was absolutely adoring its size. The glans, peeking halfway through a cocoon of foreskin, swung just short of his knees. The blinding red ballsack hanging by its root was stretching the bikini to the point of tearing. He looked around and noticed the crowd of gawkers surrounding him. He read expressions of shock, terror, amazement, and envy. Well, if he had a dick that got this kind of a reaction, who was he to complain?

Besides, the results were hard to argue against. He had been the toughest specimen in the gym by leagues, now he had become a towering model of strength far so Herculean that it was cartoonish. He towered over the bench. His head felt heavy with his bigger horns, and what had been a very nice bosom was now gone in favor of pecs capable of stopping bullets. In just a few minutes he had achieved something impossible. It defied all logic. It was a story nobody would believe had they simply been told it, yet here he was experiencing it, reveling in his new splendor.

He still wanted more. He bent over for the bag of cans. He accidentally bumped his enormous horns into the machine next over, keeling the several thousand-pound machine over on its foundation. He stood back up and chuckled. "Oops." With his paw on his horns, he squatted and picked up the bag. It felt more like a small pouch in his grasp than a full sized grocery bag. He pulled the remaining four cans out. He didn't bother cracking them open. He stuffed them all in one paw, lifted them over his open mouth, then crushed them. Thick supplement the color of bronze oozed down the destroyed containers and piled into his open maw. It was all gone in a matter of a few swallows. He chucked the empty cans across the gym, making a few people jump out of the way as it crashed into the walls and then skittered to the carpet floor below. The goliath houndoom went to work immediately, already feeling the Testoster-Grown surging through his body, ready to add yet more to his colossal frame.

He swung his arm out and pointed to the nearest group of gawkers. "You!" he barked. The men yelped and cowered. "Grab as many weights as you can. We're gonna put together something I can work with." His voice was a grumbling baritone. It thrummed through the atmosphere like distant thunder. The men nodded hastily and got to work. They threw as many 100 lb disks as they could onto a fresh bar, adding up to a weight of over 2000 lbs. Rose shook his head. "Gonne need more than that." They figured as much. They dragged over the heaviest pairs of dumbbells which ranged from 40 to 90 lbs. They used kevlar straps to tie it onto the bar. It added another 640 lbs to the weight, creating a total of 2640 lbs. By this time the bar was sagging on the rack, ready to either snap in two or crush the hooks holding them up. Before that happened, Rose walked up to it and curled it up. The steel bent like a belt, yet the weights remained on the bar. Rose put it on his shoulders, hardly straining his already gargantuan muscles.

He scoffed. "More." The men who had helped looked around. There were plenty more weights, but not enough room to add them on the sagging steel pole. Rose's patience grew thin. "Get the biggest guys up here and hold on! Don't be a bunch of pussies!" At that time even the biggest men were trembling in their shoes. They wanted nothing more than to get the fuck out of there, but earning Rose's wrath seemed like a very unhealthy option. Half a dozen men made the dangerous journey of getting close to him so that they could grab onto the bar. They each had to jump to grab it, he was so tall. Three men dangled from each side, praying that whatever Rose was about to do wouldn't kill them.

It still wasn't enough, but it was as close as they were going to get. "Let's go!" Down Rose went. The men came down with her, briefly squatting down on the floor with her until they were each rocketed back into the air. Two of them couldn't hold on and fell down to the floor, creating what would've been a dangerous imbalance in weight between the two ends. It didn't phase Rose. He went back down, and then back up, easy as ever. The muscles across his body pulsed out against her skin. The thousands of wiry sinews that ran through him seemed ready to snap at any moment. More veins crept along his limbs. The blood surging throughout his body flooded his penis, rendering it erect in a matter of seconds. The men holding on to the bar could hear the powerful thump of his heart as well as the incessant grinding of muscles. They were afraid at any moment that he would suddenly give way and drop the weights on them. It was the most terrifying ride of their lives.

There was no need to fear. Rose was just getting into his groove. With his legs pumping, glutes clenching, and cock throbbing, he continued squatting until once more he continued to grow in size. The growth of his muscles was to be expected, but what really shocked the crowd was his visibly climbing height. His horns were getting closer and closer to the tiled ceiling with each squat. The bar was looking smaller across his shoulders. The men holding on realized how high they were getting and let go the next time she squatted down. They ran away and out of the gym. They were joined by several others too terrified to stay. The brave few who remained were blessed by the sight of his bikini snapping like a rubber band, letting fly his titanic scrotum and revealing his black nipples. His cock only continued to jut forward in sync with his vertical growth, now appearing to be unstoppable. It throbbed before everyone's eyes. It was woven with as many finger-thick veins as his howitzer-sized arms were now.

He went faster, and faster and faster. Through his fury he was dimly aware of the gym growing smaller around him. He saw people running for the exits. He could feel his member flopping up and down like a diving board. Fat globs of musty precum flew from its tip, slapping into the poor machines in front of him. That about convinced the last few people who remained to get the fuck out of there. Only the manager remained, stuck where he was like a petrified zebra, forced to watch as his pride and joy was desecrated.

Rose didn't care about the people or the gym. He just wanted to grow, grow, grow. The weights on his shoulders didn't even span the breadth of his traps anymore. She held them on with just the tips of his fingers. They didn't even feel like weights anymore, more like an obligation by this point. It was just old fashioned, weightless squats, one that grew more dangerous as his horns inched closer and closer to the ceiling until...

_ KRASH!!! _

Rose's horns smacked right into one of the lights hanging from the ceiling. Shattered glass and sparks of light sprinkled down his head. He felt and heard it clearly, but that wasn't about to stop him. He just went right back down and came right up, hitting the poor fixture so hard that it clanged off of his horns and plummeted to the gym floor with a terrible clamor. The sound of it all punctuated his strength. He felt so powerful, like he was completely unstoppable. Nothing would ever put an end to his gains. He would just grow and grow and grow. The muscles across his body stretched and bloated like there was no tomorrow. His penis stood out of him like the cannon of a tank, bleeding a flow of precum so thick that the entire gym reeked. He scrunched his eyes shut and growled. He chanted through his mind, More. More. More. More! MORE!

His horns struck the ceiling, denting and cracking it. He hit it again, then again, until his entire crown was poking through the open drywall. There was no pain, only the blissful knowledge that he was the strongest creature alive. His euphoria peaked with an orgasm like a monsoon. His valorous cock erupted a geyser of marble cum that flew across the gym like a jet from a fire hose. "GAAAAAHHHHHHHHHHH~!" screamed Rose, both out of triumph and ecstasy. The dozens of machines in front of him were utterly plastered. The wall in front of him was struck with a whap so loud that it sounded like it had been hit by a car. The geyser stopped, only to be followed by another, and then another. To call the cum that spat out of him "ropes" would be woefully short of their splendor. Liquid pearls the size of grapefruits hit everything in front of him until finally his climax was over. Even then his erection did not fade, not with the continuous flow of blood being pumped into it.

Rose came to a stop not out of fatigue or boredom, but because the stench of his own cum became too much to bear. He stopped with half of his head poking into the ceiling above. He was over 30 feet tall now, boasting a musculature and genitals like some Lovecraftian monster. He ducked his head out of the hole and saw the flood of potent seed he had created. It looked as though someone had put a dozen cans of wet paint on top of a scaffolding and let the thing fall, only what he created was much, much thicker than paint. It oozed from the many machines he had soiled, forever staining them with his masculinity. It made his nose crinkle. He chuckled. "Damn. Didn't know I had it in me."

He let the weight fall from his back to the floor. It landed with a loud bang, smashing right down into the carpet and fracturing the tile beneath it. He was busy flexing and admiring his new body when the utterly appalled manager bravely stepped up to him, paws folded in front of his chest, trying not to gag from the reek of Rose's cum. He sidestepped into Rose's perception, from his right side. He flinched when he noticed him. "Umm... Ma'am... Er... Sir... I... Um..." His throat was tight like a vice. Rose only looked at him quizzically, waiting for the poor sap to say what he had to say. "I'm going to have to ask you to leave."

"Oh, yeah?" boomed the giant. "Why's that?"

The poor manager began to shiver. "Um... Well..." He ogled that Jovian cock of his. "I'm afraid you're indecent."

Rose burst out laughing, making the manager cover his ears. "Well, alright. I won't messy up your gym anymore." He sauntered over to the exit, ducking beneath the low ceiling, swinging his spiked tail behind his grinding buttocks gaily. "The stuff you've got is too small for me anyway." He calmly punched through the wall above the exit, bursting it into a shower of shattered bricks and steel beams. The people walking and driving the street screamed and ran away. He calmly stepped outside and took a deep breath. It was a beautiful day, perfect for showing the world his nude glory.

THE END