Sean uncapped the new sports drink he'd heard about, 'Reaload'. It was advertised to refresh the body after a workout, filling him with any nutrients he needed. He was already home, discarded his gym soaked shirt as he felt the cool liquid run down his throat. He felt it settle in his stomach, a strange comforting feeling in his stomach as he felt his muscles start to relax.
He continued drinking, not noticing the changes. His body had begun to swell, his build growing softer as if filling with the liquid. His stomach began to push out, his chest and arms softening beginning to crease on his body.
He didn't notice as his body began swelling, his shorts slowly falling off as it became almost too large for him. His body was becoming flabby, more of a pillow to sit on than a frame of muscle. Sean was too distracted, guzzling the drink down to preoccupied with the cooling sensation it gave him.
He felt his mind growing foggy, tired from the workout. Thinking felt like too much of a struggle, his thoughts almost weighed down as much as his body felt. He couldn't help but enjoy the feeling as he took another gulp.
Once Sean finished the drink, his body was unrecognizable. His muscles were surrounded by soft cushions, lost in a sea of mass. His shorts struggled to fit him, slowly riding down his larger rear. He felt content, a strange pleasure from the heavy warmth that filled his body now. He couldn't wait to have another.