Brett's New Gym

Support Tier-exclusive

Brett had always been fit, lean, and defined—at 5’11” tall, with the kind of build you saw in fitness magazines: tight abs, firm arms, and enough vascularity to show he cared about the gym. But nothing about him stood out like he would like to. He knew a place, a very exclusive gym where people went when they wanted to stand out. It wasn’t your average gym; it catered to a very specific clientele. The equipment was massive, reinforced for weights that no regular person could handle. And the people—the men here were giants.

Brett entered for the first time with wide eyes and an open jaw. All around him were walking monuments of masculinity. Pecs like overinflated balloons, arms thicker than his waist, butts that rippled with every movement. They were beyond massive—inhumanly big. Each man looked like he had been sculpted out of meat and force-fed power. And they all carried themselves with a casual ease, as if their freakish size was normal.

Brett couldn’t stop imagining himself like that—bigger, rounder, and impossibly huge. He breathed deeply, soaking in the atmosphere. Even the air felt thicker here. He tried his best to go unnoticed as he warmed up, sticking to basic cable flyes and incline presses. But the weights he struggled with were laughable to the others. His arms trembled and his pecs strained, but he refused to quit. He was willing to do anything to get as big as the others.

Then, during his second set of cable flyes, something happened. A towering man approached from the free-weight section. His pecs jutted out like overinflated slabs of granite, wide enough to cast shadows on the floor beneath him, bouncing with the slow rhythm of his confident stride. His arms looked like tree trunks—massive, veined, and constantly flexed under their own impossible weight. His lats flared out so far that he had to angle his body slightly to fit through gaps between machines.

His thighs were monstrous, as thick as barrels and pulsing with every step, forcing his stance into a slow swagger that made his rounded ass clap slightly beneath his strained shorts. His face was breathtaking, with a square jaw, thick brows, and piercing eyes that held a strong dominance. A short, well-groomed beard hugged his jawline, and a cocky, knowing smirk played across his lips, like he was fully aware of the effect his body had on everyone around him. He was masculinity personified—raw, imposing, and undeniably magnetic.

“Need a spot, man?” he asked casually, making Brett shiver at the sound of his voice.

“Uh… Yeah, sure,” Brett gasped, already wiped.

They worked through a few sets. The giant was encouraging in a charismatic but firm way. It was like the man wanted Brett to push his body beyond its limits, but in such a friendly way that Brett continued only to make the other man happy. It was a strangely sweet, dominant way to force Brett to keep going. And, as Brett pushed rep after rep, he didn’t notice the moment the man reached for his shaker bottle, tilting his body to block Brett’s view. It only took a second for something small to drop into the liquid. Then the bottle was back in place.

“That’s good, dude. Now, hydrate,” the man said with a grin.

“Ugh. Okay. I need something more than a drink to survive this,” Brett said, panting as he grabbed the bottle and drank deeply. The liquid was cold and sharp. Almost immediately, a tingling spread through him. His arms buzzed. His chest felt light. The next set felt easier. He felt suddenly energized. “Whoa,” he said, aware of how much the drink had helped.

“Told you. You’ve got more in you than you think,” the man said, smirking.

****

Brett entered the gym again the next morning, but this time, every head turned. He had grown massive. His frame now rivaled—if not exceeded—the biggest men in the gym. Every inch of Brett had morphed overnight into a surreal display of hypertrophy. His pecs had become truly overwhelming: two monumental globes of dense, milk-swollen muscle that surged outward from his chest, so large and heavy they cast shadows on his abs below.

They sat high and proud, so round that they looked inflated, defying gravity and quivering slightly with every motion. The skin stretched tight across their surface, and veins webbed outward from the thick, swollen nipples, which sat lower now from the mass above them. It was impossible not to notice them first. They were too big to ignore, jiggling with each deep breath and brushing lightly against the biceps when the arms moved too close.

His arms had ballooned into thick cords of granite, rounded, massive, and overinflated with unbelievable density. His shoulders were broad boulders capping off his now impossibly wide frame. Despite the expansion, his waist had remained tight, cinched down like an hourglass, which made his upper body seem even more impressive.

His lower half was equally impressive. He wore only a tiny green poser—not by choice, but necessity, because nothing else fit him. The poser clung to him like paint, visibly strained by the round, muscular globes of his butt, which protruded so far behind him it created its own sway as he moved. The weight of his new bulk forced him into a waddling gait, as his thighs were so massive and meaty that they rubbed together with every step. Every motion felt exaggerated. He moved like someone trying to adjust to a new, overgrown body. He was.

Each step was almost sensual as he navigated through the gym. His body shifted and bounced with every minor adjustment. He radiated heat and mass, and he could feel it—the eyes on him and the desire. And Brett, already drunk on the new power surging in his body, loved every second of it. He flexed as he walked, bounding his pecs and tensing his arms. He was glowing, and he knew it. He could only smile as others stared.

Then, he found what he was looking for, the man from yesterday. The man sat casually on a bench, scrolling through his phone like nothing had changed. Brett marched up to him, rushing through the machines as fast as his broad and heavy body allowed him to.

“Whatever you did yesterday,” Brett said aloud to draw the man’s attention, “I want more. I want to grow unlimitedly. I want to go beyond.”

The man looked up, scanning Brett’s transformed body. “Oh. Hey! You took to the first dose well,” he said casually. Then, he pulled out a small bottle from his pocket. “Ready to take it to the next level?”

Brett didn’t hesitate. He snatched the bottle from the man’s palm, took a pill out, and popped it into his mouth. No words, only the determination to grow enormous.

The man grinned. “Welcome to the big leagues, big guy,” he said as the other muscle men in the gym nodded silently, acknowledging the birth of a new monster.

********

Plot submitted by a Support-tier member as part of the tier's benefits. Scenario based on a muscle morph I did of Brett Wilkin.