"Ooh man..." Ty laughed. "This is just too much fun, Dustin. Just look at all these guys I buffed up!"
"Yeah, no kidding... Some of the teens are bigger than the dudes who've been working out here for the last five years... thanks to you!" Dustin sighed as he rolled his eyes.
"Hey, you can't complain, just look at your own muscles!"
Dustin flexed his gigantic arms and stared in awe at his watermelon-sized biceps.
"I won't argue with ya, bro..."
"Let's hit the other gym across town and buff up some new guys!" Ty suggested. "What was the name again? Bunky's Gym?"
"Yeah but I'm too big to fit into my car..." Dustin groaned.
"No worries... I'll just wish us there, as soon as I snap my fingers!" Ty cheered.
Ty snapped his fingers and he and Dustin were magically teleported to the lounge of Bunky's Gym, which was about 15 miles from the other gym where they had just come from.
"Ahhh.... Now we got some fresh muscle to work with!" Ty grinned, as he cracked his knuckles. "Let's look for our first dude to grow..."
Right away, Ty spotted a teen who seemed to be around his own age. The boy looked like he was about 5 foot 6 inches tall, he weighed about 180 pounds or so, and he seemed rather lean and fit, but he didn't really have a whole lot of muscle on him. The teen was doing some bicep curls with a set of dumbbells in the corner, right before the large mirrors.
Ty climbed on the elliptical bike and concentrated on the teen from a distance while Dustin got on the bike right next to him.
"The dude's name is Brian... He's fifteen years old and he goes to Lincoln High School... We'll he's fixing to make a lot of gains right now... Watch this, Dustin!" Ty warned him, as he put his power to work.
Brian decided to start his last set of reps with his dumbbells when his biceps started to feel funny. The very next rep he did, each bicep suddenly hardened and grew by an inch, becoming round and hard like rock.
"Whoa... Either I'm getting stronger or my muscles just got... bigger??" Brian gasped.
Brian realized that he raised the dumbbells with greater ease this time. He tried again and his biceps inflated even more. This time, his calves started to swell up as well. His biceps became the size of melons while his calves continued to bulge out, pushing his socks further down. At the same time, veins started to pop up all over his biceps as well as his calves, all at the same time.
"Hey... what the heck???" Brian wondered, as he quickly set the dumbbells on the floor. He turned to see his reflection in the mirror and wondered what was going on.
Next, Brian's quads started to push outward and sideways, with thick, hard and veiny layers of muscles forming all over his legs. At the same time, his pectorals began to inflate, growing to the size of beachballs that were inplanted in his chest, forcing the straps on his tanktop to strain to the max almost to the point where they snapped off.
"Uhhnnnnnn.... Holy crap I'm HUGE!" Brian gasped, feeling the added weight and strength from gaining almost 100 pounds of additional muscle in just a minute.
Lastly, his cock grew from 5 inches to 11 while it filled out to 4 inches in girth as his balls grew to the size of tennis balls, giving him an enormous bulge in his shorts.
"Whooooo.... Mama! I dunno what's happening to me but... What a rush!" Brian cheered.
Ty just laughed as he studied the results of his handiwork from a distance.
"So? What do you think?" Ty asked his brother.
"Not bad..."
"Let's see if we can find some other guys to grow in this place.... Ohhh I see someone over there!" Ty cheered...