Gym session (Patreon)

“Hey… are you sure about this?” Marcus asks, wiping his sweaty forehead as sweat continues to drip down onto his shirt. Looking down at his flabby belly, Marcus is rather frustrated at himself for going to the gym for months, but not slimming down at all. His friends have been silently judging him and all the girls have avoided him. Working at a desk job didn’t help with his fitness either, so he had been going to the local gym before work and recently met a trainer called Trent.

“Yeah mate, finish this bottle and that belly of yours will be gone in no time!” Trent grins, handing Marcus a bottle filled with blue liquid. After spending a few sessions with Trent in the early morning hours in the past, Marcus decides to trust him and chugs the entire bottle. “Woah, slow down buddy, with this, your endurance will be off the charts and you’re gonna be ripped” Trent laughs.

Trent is Marcus’ role model since Marcus dreams to be as buff and confident as him around other people. Wiping his lips, Marcus strides over to the dumbbells feeling a little queasy but excited to test the drink. Grabbing his usual weight, Marcus finds himself lifting the iron surprisingly easily and laughs to himself. A tingling sensation fills his arms as they slim down, pushing the excess fat out and looking more toned. “Oh shit! It’s working!” Marcus shouts, squeezing his biceps.

Encouraged by the recent improvements, he hurries over to the deadlift area and slips on more weights than he ever tried. Grinning, he crouches down and wraps his hands around the bar before tensing his lower body and pulling the bar up much to his amazement. Dropping the bar, Marcus feels his pants starting to tighten around his thighs. Marcus pulls the bar up once more as fat begins to flow into his widening thighs; and at the highest point, a loud pop fills the room as his hips painfully snaps outwards. Marcus drops the bar in surprise feeling his wide hips stretching his pants to its limits. “What the…” he mummers, squeezing his thighs and tracing his pelvis bone. His pants become more restrictive as fat flow into his ass, ballooning it out to match his thick thighs and hips.

Marcus doubles over holding his crotch as his dick painfully shoots upwards in his pants. “Nurgghhh... stop…” he moans, feeling it grow damp as he blows a load inside from his rough pants rubbing against his shaft. His crotch burns hot as he watches his bulge in his pants slowly become flatter and with a slurp a wet quivering pussy takes its place. “What the fuckkkk” he pants, tracing the folds of his pussy and shivering as his finger pushes into his warm vagina, shooting new sensations to his brain.

“Wait… this isn’t what I wanted” Marcus shouts and stomps his feet only to feel his ass jiggle around.

“Why don’t you do some bench presses?” Trent laughs, giving Marcus’ bubble butt a quick slap. Without hesitation, Marcus spins around and heads to another area of the gym sexually swaying his hips as he walks.

“Why… why can’t I control my body…” Marcus screams, as he plants his thick sweaty ass onto the seat and leans back behind the bar. Clutching the bar, he notices that his hands look feminine and petite with manicured nails. Automatically taking a deep breath, Marcus lifts the bar feeling his body shift and contort from the weight. His shirt morphs upwards becoming a sports bra revealing his shrinking stomach; with a grunt Marcus raises the bar high above his chest as his stomach flattens and waist suck in giving him an athletic look. Panting, Marcus’ body lowers the bar as his skin smoothens and bodily hair pluck off.

“Look at all that belly fat gone! But all that fat has to go somewhere…” Trent grins watching Marcus’ body twitch from the changes. As if on cue, Marcus’ small hands grab the bar once more and begin to push it up. To his horror, his nipples begin to stiffen and perk up as it rubs against the loose sports bra. Grunting, he lifts the bar high above his chest once again feeling fat swirl and build up behind his nipples, slowly pushing outwards and filling the bra. Moaning from the weight of the bar and pleasure from his budding breasts, Marcus watches his tits balloon out to firm E cups stretching the bra to its maximum.

“Oh fucckkk” Marcus groans, feeling sweat drip down his cleavage and soak his bra revealing a clear outline of his puffy nipples. He looks at Trent with fear seeing Trent staring back with a wild grin.

“Now… try the resistance bands… lets see how long you can resist the final changes” Trent laughs. As if on cue, Marcus’ body returns the bar and sits upright, feeling his heavy breasts bounce with every small movement. His body struts to a set of elastic ropes and leans down to pick them up, showing his ample cleavage and round ass to Trent. Stepping on the rope, Marcus’ arm begins to flex, stretching the plastic as his mind turns foggy.

“Huurghhh… please… I don’t wanna… be a gym slut” Marcus moans, eyes rolling back as his memories begin to fade slowly replaced by Kim, Trent’s girlfriend. Memories of working office jobs are replaced with getting plowed in the shower rooms and spotting for Trent during bench presses. With each pull of the elastic band, Marcus’ face begins to change. First his eyes widen and irises turn turquoise blue as his eyelashes grow longer. His jaw and nose follow suit as they crunch inwards and soften. His lips plump up and widen from all the dicks it sucked in the past whilst his neck slims down raising his voice by an octave into a seductive feminine purr. Lastly, his hair begins to flow down and turn blonde reaching past his jiggling butt and tie itself into a ponytail.

“Oh my god… I look like a slut… so sexxxxyyy” Marcus moans, biting his bottom lip looking at his own reflection in a mirror. “Please… change me… Kim…. Back---make my ass bigger” Marcus groans, looking at Trent as his soul finally disappears, leaving a horny and sweaty Kim in its place.

“Let’s see if you have that endurance” Trent grins, walking to the changing room.

“Oh I’m sure I won’t disappoint” Kim giggles, rubbing her twitching pussy and groping her massive breasts as she follows Trent into the room.