It's true, models can already generate muscular people. What this embedding aims to do its reduce changing musculature to a trigger word.
What it's for:
Replacing long prompts such as: bodybuilder, thick thighs, muscular thighs, thick arms, muscular arms, thick torso, muscular torso, muscular abs, muscular shoulders, large arms, large thighs, broad shoulders, large torso
Making muscular femmes look more feminine. Typically increased prompt words, especially, bodybuilder want to generate masculine features, and put the subject in the gym.
Better musculature under clothing.
Less extenuated hourglass. Broader torso/abs. For an even bulkier figure, try jujuStyle Lora.
More clothes requires more emphasis. See examples for emphasis scaling.
Works for anime, and digital painting styles as well.
What it's not for:
It can generate masculine subjects, but models typically already do a decent job.
Fine-tuning a subject's proportions. Detailed prompting will do better.