Alex decided that if he's going to go through with this, he may as well go all the way. Somehow knowing what to do next, Alex forms a fist with a thumb out and sticks it in his mouth. With a huff and a puff, Alex blows into his gloved thumb like it was a balloon. Each breath sent a bulging pocket traveling down his arm, adding mass where ever it settled. Soon his arm burst through the sleeves of his shirt, exposing an absurdly thick and muscular arm colored grey this tufts of fur at his elbow. Along with his arm, each breath caused his face to bulge slightly larger each time.
Pulling his hand away, he saw how ridiculous he looked with his normal body except for a bulbous head and one disproportionately large arm; he's not even sure how he's managing to stand up strait with how lopsided he looked. Not only had he gained mussel, but length and size as well. He let his arm down and the tips of his claws brush the floor (apparently his hands grew claws at some point, although they do not pierce the glove, instead the glove forms around his large hands ending in points).
No reason to slow down now, Alex starts in with his other arm. In a mater of moments, he held up a mirrored arm (he could probably walk around on his hands and let his body dangle if he wanted). And like with the other arm, his face now pushes out almost two feet with a set of swollen lips inflated by his efforts. Then, Alex gripped with both hands his shirt at his chest and ripped it open like superman. Underneath came a flood of grey fur and meaty pecs, expanding larger and larger as his tattered shirt falls away.
Looking at himself, and how much he's changed, Alex starts to get hot, thinking back at how tiny he used to be and how much of a beefcake he's becoming. A pressure in his pants and shoes start to grow exponentially. He goes to try and pull his shoes off, but they are on too snug, instead pulling extending his legs similar to his arms, but the leg mussels are much more subdued than his arms. With the pressure around his shoes and pants building, his feet are the first to win out. In a burst of leather, laces, and fluffy grey fur, his feet destroy his shoes, making way for a pair of three-toed fluffy paws with thick black pads meeting the tile floor and lifting him up. The thickness of his feet paws alone makes Alex a foot taller than he was as a small human.
Alex had become a Greek god of a cartoon wolf; a face dominated by a bulging snout with fat drooling lips and teeth that could barley be hidden behind them, shoulder width so wide that he'd need to turn sideways to fit through doors, or more likely, burst through the door leaving an Alex shaped hole behind him, and three toed foot paws that would need clown shoes to contain them, not that Alex wares shoes anymore. The last thing left was the pressure in his pants, stretched so tightly that they now resembled spandex. With one last exertion, Alex clenches and tenses up his body. veins start bulging across his mussels when his spandex pant legs are pulled up, stretched and pulled by the growing bulge in his crotch. Every second sent another pulse and surge of growth until an obvious outline of a pair of cantaloupes and bowling pin contoured his pants which now resemble a speedo.
And then it was over. Looking at himself in the mirror, Alex felt a surge in confidence. He ogled himself, flexing his biceps. With a quick swish, Alex changed poses to showcase his pecs, then to another to show off his legs and toned ass, all the while with a massive grin stretching ear to ear. "What a hunk of meat! Especially right here," Alex pulls open the waistband at the front of his speedo followed by the sound of a diving board recoiling as a 5 foot long dong springs out, going up his chest just short of his long snout. He gives is a sniff and then a lick, and steam shoots out of his ears. "Oh baby, that's what I'm talking about!" He shouts to the room. "I can't wait to try you out!"
Alex stretches his speedo up and out to contain his massive erect cock, despite it not possibly having enough room to hold all of it. Alex has to think about how he wants to use his new and improved equipment.