Slowly I feel a familiar heat spread through my body, my muscles bouncing and twitching involuntarily under their tight lair of clothing. Not here, please not here. Just a few more minutes and I would be home, where I had privacy in spades.
I’m familiar enough with the sensation however to know that once it starts, there’s no going back.
I look around anxiously, I had enough unwanted attention as it is. Prying eyes tracing the bulging muscles making up my tall and adonis like figure. I’m not even sure why I still went with the subway nowadays, the potent beef that made up my calves could carry me faster than any train could. Old habits die hard I suppose, and this new masculine body craved this kind of staring attention as much as gym time.
The hot and burning feeling intensified in my chest. I regretted doing an extra chest work on what was supposed to be a core day now, my pecs were already pumped and hard with the workout, I was terrified what the heat was gonna to the straining and globe like muscles.
I felt a pit turn in my stomach. Well, it was too late for regrets now.
My breathing slowed as the burning pain made way way for soft sensual pleasure. My knees buckle as I widen my stance. It feels good having some air between my legs and the meat dangling down there. Feeling good faded into feeling really good, my muscles cascading, the worries of being seen not even in the back of my mind as I let euphoric ecstasy wash over me.
Pure power and exhilaration pumps through my veins, and I notice the first signs of the transformation.
My biceps feel pumped, like I had just worked them out. I’d done no such thing but the pleasant glow and swollness is there regardless. I firmly grab one of the poles placed around the subway for support. I look on in awe at the massive arm that is holding the metal pole. My massive arm. It’s peaks are stretching further and further, each muscle becoming more pronounced. As I feel the growth slow down in my biceps I casually roll up the sleeves, and look in awe at the raw power on display. Fuck, they looked a solid inch bigger than when I had measured them just a week ago, I normally never grew this much from a single growth spurt.
Instead of the exhilaration and euphoria fading now that growth did it’s job I felt it’s pleasant buzz persist. Slowly I could feel it move on to my impressive chest.
Feeling your pecs grow and swell is unlike any experience describable. Once the sinews making up those globes grow past a certain size, and you always feel your pecs hanging out of you, being dragged to the earth, the mere idea of them growing can be erotic. Let alone standing and actively feeling them being pushed bigger and bigger.
The hardon I had down a leg of my pants grew hard as steel feeling the pump and size of the swelling muscle. Slowly I could hear the rattling noise of the zipper of my sweater being unzipped. The muscular rack making up my chest, growing more and more impressive by the second, would no longer be contained. As I felt the cold soft breeze on my chest, my nipples growing plump and solid, I remember I wasn’t wearing a shirt under my sweater. Well I had been, but after my workout in the gym I had been forced to sacrifice it as cum rag to shoot my load into.
“Hey! You you there!” I heard a voice say coming from somewhere in the back of the train. I woke up from my euphoria, I snapped back my arm from the steel pole it had been holding, only just now noticing the deep imprint my massive paws had made. I hoped nobody had seen my muscles swell and ripple with power.
The subway screechingly slowed down to halt and I quickly get off. It was a few stops early, but I’d already drawn an awful lot of attention to myself, and the persistent pleasant warmth promised more growth to come, and I wasn’t sure if my shorts would be ready for that.
“Hey, you! Meathead! I’m talkin’ to you!” I didn’t look back, I could feel the growth move to my already obtrusive cock, I didn’t want things to get any more obscene.
I felt some wimp grab onto one of my colossal arms, he was taking two steps for just one of my big strides. Was I gaining height too, or was he really that puny? “You’re not getting away from me that easily. You’re one of those freaks that is all over the news right? The ones who seem to magically pack on size? What are they calling it, that disease, now? ‘GR0-B1G’ or something? Well, whatever it is called, you're infected with it!"
I nod to indicate no, but there probably was little I could say after he’d seen me gain 20 pounds of muscle in a few minutes. Shit, I’d manage to go undiscovered for so long too.
“You’re not fooling me! Last I heard the army was paying millions to citizens that handed one of you aberrations over. Got your little freaky growth spurt right on camera.” The paltry and tiny excuse for a man said while waving his phone around triumphantly.
Instinctively I grabbed the small device right out of his hand. I consider my options for a second. I had always been a law abiding citizen, but sometimes you gotta put your own safety first. I can’t help but feel a little intoxicated with my own strength as I crush his small phone in a matter of seconds. Wasn’t planning on being some lab rat for the army, especially now that I had this body to play around with.
As I leave the puny runt to mourn the loss of his phone I wonder why I always worry so much about being discovered. If I could crush it, it wouldn’t talk. Advantages of being a behemoth.
And as I hear the ripping noises of my cock fighting against its clothing prison I wonder how much growing is still to come.