You could say the same about any type of exercise. If a newb tries to reproduce something they see on TV/YouTube, they will hurt themselves with ANY type of basic movement, with weights or without.
I'm speaking of nationally sponsored crossfit meets, especially those that are televised on ESPN. Those are supposed to be "professionals" in the sport at the top tier and while their physiques might be outstanding in many respects, their approach and form is quite the opposite. This is a fad as far as I'm concerned.
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