Ty sat in his room, staring at the mirror. He looked at his body... he did a good job keeping himself nice and buff... but he NEED more. He could be athletic whenever he felt like it! This was great! He decided to let himself go.
“I wish I was nice and pumped a muscle guy. Smooth, and always firm, so I don't sag.” Ty stood up and walked to the mirror as his body tingled. He looked at his tight upper body as it began to thicken a bit, and bulge. His defined abs soon began to deepen into his bulging midsection. His pecs began to bulge out a lot more, his chest began to widen as his sides shrink a bit. His ass swelled into his jeans, so did his thighs. He heard the fabric groaning. He looked down and saw a sizeable bulge in his groin, and it was still growing.
In a few moments, his jeans groaned loudly. The zipper burst and the button broke off at the same time. Ty rubbed his swelling package. Soon, he stopped getting bigger. He peeled off his clothing and looked himself over. He looked amazing, even when better than before! His dick was hard, pointing out a full 11 inches. He felt big, heavy all over. His body was buff and hard, not an ounce of fat anywhere! He couldn't resist it. His hand fell to his huge cock, and he began to stoke himself. Soon, he was in full force jack off mode, rubbing his big body as he pounded away. His whole body felt so good! He moaned loudly, as it only took a few minutes, and he shot. Ty sighed in content, and pulled himself up and walked to the bathroom. 20 minutes ago, he had been a lean, athletic 160 pounds, now he was a muscle monster.
He looked at himself in the bathroom mirror again, totally turned on by his fat self. He got on the scale.... 320. He doubled his weight and gained a grand total 160 pounds. He liked this... he could stand to be a bit bigger too....
Ty stood in the bathroom and marveled at his muscle body.