Coworker telling me about "muscle confusion"

>friend can't do chin-ups
>I say do negatives
>"No I can't my gf won't allow it"

His GF says that negative pullups/chin up causes rhabdo and kidney failure

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Sometimes it's good to have people as clueless as most of you so the fitness industry can keep selling stupid memes supplements that doesn't work... and still make bank

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"my girlfriend wont allow it" should only be in the context of cheating. "not allowing" anything else is fucked up

> 6-8 reps builds mass
> 10 -12 reps losses weight