re: Chris Hemsworth's stunt double says he's struggling to keep up with the star's weight gain

quote:

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Where steroids help the huge growth, is when you couple it with a type A neurotic workout warrior. What steroids due is allow you to recover and push yourself harder and more often

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Muscles don't grow in the gym.

Muscles grow during recovery.

If you youtube look at the muscle Juju has packed on cutting back on training and tweaking his diet while coupling it with cycling.