Just as what he told Greg, the new David went to the gym. Back when they were in their original bodies, the original David would never set foot in the gym. When she asked him about it, he just said that it wasn't his thing. Upon hearing this, Cathy feels that there's so much wasted potential with her son. She may not have been an athlete but her father was once the wrestling captain of his high school. Luckily, David's body was more like his father's. He may have inherited Cathy's softer features, but his body was able to develop muscles very quickly.
In just a week of working out, David's body already feels like it's developing muscles very well. He now has something to show off whenever he flexes his biceps. It's still nothing impressive, but it's already better than what he had initially. Aside from having the genetics of his father, what is unknown to the new Cathy was that the clinic provided the new David with experimental supplements to bulk him up quicker. This was thanks to a conversation that the original Cathy had before the procedure began. The new David wasn't sure what these experimental supplements are made of, but it sure is working.
Since he started going to the gym, the new David focused on strength training. Back as Cathy, she didn't have the muscle strength to lift some weights. Not to mention that her joints ache a lot whenever she attempts to try. Now that she's inside a youthful male body, that is not an issue anymore. He was able to lift weights with no issues whatsoever. He spent two hours inside the gym while only doing strength training. He finds cardio exercises a waste of time. The new David wants to build muscles as quickly as possible since his goal right now is to enter the school's wrestling team.
After working out, the new David went to the changing room to freshen up. He stripped his wet clothes and inspected his sweaty body. It's been more than a week now but the new David still feels ecstatic whenever he sees his body. There is an immense feeling of pride and pleasure whenever he sees his body glistening with sweat. The post-workout pump makes his body look amazing. He may not have the bulging muscles that he wants for himself but what he's seeing isn't bad at all. His biceps are starting to develop nicely and a four pack is already starting to emerge. It will take a while for his pecs to develop but overall this isn't bad at all.
Another thing that the new David noticed was that his armpits tend to smell musky after working out. Back as Cathy, she never observed this with her son. Then again, the original David never worked out to begin with. Looking in the mirror, the new David raised his arms to have a look at his sweaty armpits. There's not much hair present and he could definitely smell the musk emanating from it.
Something about seeing his body like this started to turn him on. His dick started to spring to life slowly but surely. The new David is feeling conflicted whether or not he should jack off in the changing room. He tried to settle his dick down but it just cant relax. "Fuck it" said the new David and he started jacking off. Seeing his young and sweaty body jacking off in front of the mirror put his mind in a frenzy. He started visualizing the busty ladies in the gym who he was checking out with while he was working out. He cummed after a few minutes of jacking off as he wanted to get this over with quickly before someone else uses the changing room.
"Are all guys this horny every single time? This thing has a mind of its own!" the new David thought to himself while positioning his dick back to his boxers.
Upon achieving mental clarity after jacking off, he decided to go home as it's almost dinner time already. He wonders how the new Cathy was doing and whether or not she was able to prepare dinner in the first place. For all intents and purposes, the new David's first day out in public was a success.