What actually happens
The joke is short. The answer deserves context.
If you stop training, muscle can shrink over time. If you eat more energy than you use, body fat can increase. Those changes can happen together, which makes it look like one turned into the other, but tissue does not shapeshift like that.
How the myth got legs
Every sticky belief has an origin story.
People noticed body composition changing after training stopped and gave it the simplest story. The body, inconsiderately, chose biology over storytelling.
Research directions
Where the evidence trail begins.
These labels describe the editorial research lanes behind this draft. They are not substitutes for linked primary citations or professional advice.
- 01Exercise physiologyEditorial source category
- 02Sports medicine educationEditorial source category
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