1 definition by IGS Stan

Immature Gym Syndrome.

When someone claims they know how to body build, when it is clear they do not.

When said person posts comments on social networking sites about anything to do with their training.
When someone makes baseless, uneducated comments on the effectiveness of a supplement or training method.
Guy 1: "Yea, just eat whatever you want and drink a protein shake and you'll get big."
Guy 2: "You don't need to plan your meals, as long as you use supplements."
Guy 3: "Typical case of IGS."

On Facebook- usually a small guy: "Just had the best gym session."
Everyone else: "IGS"
by IGS Stan February 20, 2012
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