"Should I be worried..." you started to ask about the tingling feeling.
Your words were cut off as the cyan energy appeared around you again. Not as a field this time, but as a sparkling little mass of lights. Everywhere they moved started to build more muscles mass. They danced over your arms as they bulked up, with biceps and triceps swelling larger as both power and definition was instilled into them. You easily sailed into the 14+ inch bracket. Even your forearms gained a bit more meat to compensate. Your hands too grew bit but more out of proportion than muscle mass, so they kept a rather feminine look to them. You still felt like your could crush a can with brief clench.
The glow moved onto the shoulders which started to broadening along with your torso. The magic also affected your back as the glow disappeared behind you. Though you couldn't see, you could feel it as sinew was quickly torn down, repaired and made sturdier, before doing it all over again. There wasn't any pain behind it, though it was pretty itchy as your back was reinforced. All the better to carry all the new mass now.
Your legs were next as the sparkles started to appear there, the limbs pumped bigger and bigger as the light moved. Defined quads became shapely, teardrop-looking beef that would make anyone do a double take. Especially in your bathing suit. Your thighs and calves weren't the only ones growing. The magic growth effected your butt as each glute grew bigger, denser, and rounder. Even with all the extra muscle, it looked like you were still going to be quite the curvaceous gal. Your feet started broaden out a bit more, displacing the sand as your sandles kept up with the change.
Your swimsuit started to get a little tight now as the rock-hard muscles were starting to become visible through the thin red fabric. Their outline showcased an clear acceptable sign of your power. The mighty six pack. Well it was looking more like a four pack, with slimmed down side muscles. oblique muscles maybe, you weren't very well versed in health class.
Up above, your average-sized breasts started to jut outward more, probably due to all the extra growth your torso was going through. The main cause was the pec muscles packing on some extra bulk, visible between your neck and breasts. Yet probably due to the magic, you didn't lose any fat like a normal work out would have caused. If anything, it seemed that your boobs were perfectly preserved; hell it seemed like they grew a bit. You weren't sure if it was because your entire upper chest had grown and thus the total mass made them bigger, or if they added another inch or two on top of that.
Looking at the mirror again; you were diffidently bigger now. You were creeping into the six foot height by now and were looking way more like a female wrestler, massive gym bunny, maybe even like a porn star that specialized in gym/sports vids. While clearly built, it was done in a more curvy than 'brick' manner. That alone let you keep your hour glass figure that would turn heads. The wish had done it's job of making you a prim mix of the body builder's mass and the sun bather's beauty.
Honestly the weirdest part was that your long blonde hair was now down to your ass. Maybe a pony tail was in order?
"Oh wow...., I can get to like this." You say as you pose before the mirror, flexing your arms, "Did this come with a bonus of fixing my health too, cause I feel fantastic. I feel like I could take on anyone on this beach if I wanted to..."
"In a fight right?" the Genie asked. You left that question up in the air for now.
"Riiiiiiiiight... okay just moving on." The Genie asked as she walked around you, inspecting her own work, "Is this enough? There's still a little room left to change things before it counts as another wish."
Good question.