This is why MetroFlex is the toughest, most badass gym in the world.

You might’ve seen this gym in Generation Iron 1 where Branch Warren trained like a roughneck monster. Well it turns out that gym is one of the toughest and most famous in the country. Check out this doc about the gym above.

Would you train there? Maybe even travel there to check it out just for a weekend? Let us know in the comments below.

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