As he was considering the adventures the next day would hold, Jeff began to feel hungry- an intense, ravenous hunger. He ate almost everything in the fridge and soon began to feel tired and sore. Not just a little sore, but suddenly wracked with a soreness deep in all his muscles.
Jeff stumbled back to his bedroom and collapsed onto his bed.
He slept fitfully, and awoke just before dawn.
Before he even got out of bed, he knew something was different. Something about the way his body felt. He couldn't really put his finger on it until he swung his legs over the side of the bed and looked down at them- WHOA. Not only were they covered in dense, dark hair, they were also thickly muscled. He realized he was completely naked- his quads had grown so much overnight that they tore his boxers to shreds.
H explored up his body, his abs solid and well-defined under the coat of hair he had come to love so much. His pecs were perfect: wide, round, firm, and, like the rest of him, coated with sexy swirls of hair. The hair grew right up to his thick neck, where it transitioned to a hyper-masculine stubble that grew high on his cheeks.
Jeff ran down the hall to the bathroom, and reveled in the changes to his body. Underneath the hair, he looked like a fitness model- undoubtedly muscular but by no means a freak.
It all made sense- a huge amount of testosterone would cause an increase in body hair, as well as an increase in muscle.
And OH! His dick! Of course! The testosterone had obviously affected that as well- it was huge!
Jeff was fucking HOT and it took all he had not to jack himself into a stupor. He wanted to save every drop of semen in his newly enlarged testicles for the guys in his gym class. He threw on some baggy clothes and headed for school.