*Cub* The Pleasure House of Nimh(age regress, gender TF) - 2007
Her mature muscles gaining muscle tone and trimming into a well shaped young woman's middle. amazement and fearful wonder filled her eyes and expression at the changes she could see along her front side. she couldn't see the changes to her buttocks.
Chaos Eternal
I thought it was meant to be just a supplement for rapid muscle gain!" like a child with a new toy, stormy flew across the solar system, continuing in her huge quest for even more size while filling the cosmos with more mouth lasers.
Cutting Loose
His humanoid physique further developed as he gained inch after inch of height, muscles gaining definition, especially on the white scaled parts of his body: abs popping out, pectorals pushing smooth scales; even his neck getting burlier as a result.
The Passing of the Flame - A Retelling
The warmth of the magic within flooded his body, each muscle gaining further strength, though a true dragon of his size would easily overpower him.
A Frog is Born
This was pure muscle. gains that would normally take years to make, or at least a healthy dose of steroids. the strength of her bulking hamstrings put so much pressure on her shorts that the leg seams tore at the stitches.
The legend of a warrior; Chapter 57: Paradise in your arms
She had grown taller, stronger, more muscular, gaining both greater bulk and even better tone, and she had immensely expanded her powers.
Arcadia: Cemented
Every muscle was perfectly defined and as his spine began to grow, marv could see those very same muscles gaining mass to compensate. marv grunted loudly and suckled on the offered nipple, soaking gantry's shirt with his drool.
Suitable Evolution
Dorsal muscles gained similar definition, building a strong back. her buttocks lifted with the ratio of muscle and fat readjusting in favor of a round, perky shape.
The legend of a warrior; Chapter 75 - The Gates of Hell
gaining a little bit more size and tone, feeding on his vital energies as he became scrawny and insignificant.