What is the meaning of what does this mean?? gym rat? - Question about English (US)

Definition of what does this mean?? gym rat gym rat = someone who spends a lot of time working out in the gym|Someone who goes to the gym a lot.

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Serious question: how does Gordon Ryan profit from bodybuilding style weight lifting? Would he not profit more from a functional weight training, something like Ono Shohei does ( I mean, there is

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100 Gym Quotes to Keep You Motivated During Workouts (2023) - Future Fit

Rat Quotes - BrainyQuote

Tough guy tried challenging BJJ gym : r/facepalm

I Am Pizza Rat,” by Han Ong

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