Definition
The controversial theory that constantly changing exercises prevents adaptation plateaus by 'confusing' your muscles. Muscles don't have brains and can't be confused, but this hasn't stopped fitness marketers from selling programs based on outsmarting your biceps.
Example Usage
His program changes exercises every week for muscle confusion, which mostly just confuses him about whether he's making any progress.
Origin
Heavily marketed by P90X in the 2000s, though the concept existed in bodybuilding culture earlier
Fun Fact
What muscles actually need is progressive overload, not confusion—but 'muscle systematic stress increase' doesn't sell workout DVDs as effectively.
Source: Fitness marketing and popular training methodology
Related Terms
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