Picture a typical video game player. Probably the person you are envisioning in your mind is a teenage boy or a young man, hunched over on a couch with a video game controller firmly ensconced in his hands. With the exception of the odd nervous twitch and shout in anger when he gets fragged, there is very little motion on his part. He’s not really all that different than a couch potato, because the only muscles getting a workout during this gaming session are in his hands.

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