Re: Who works out?
I have this friend who's in good shape and he started doing push-ups this summer but his arms aren't getting big. Could this be because of genetics? Will some people's arms remain skinny no matter what? Oh also, my friend has been doing sit-ups and while his stomach is lean and has little fat, it isn't getting ripped, and he can't get a six pack to become apparent. Any advice for him?
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