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I've never seen this before. I'm pretty convenced though.
What do you all think?
Is there are requirement for abdominal strength or weight? I'd imagine if you weren't in decent shape when you try this, you will end up sending your vertebra flying like a bunch of hockey pucks.
What do you all think?
Is there are requirement for abdominal strength or weight? I'd imagine if you weren't in decent shape when you try this, you will end up sending your vertebra flying like a bunch of hockey pucks.