Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. In the world of ...
In the cult 1977 bodybuilding documentary, *Arnold the Great*, we see Schwarzenegger and his friends lifting heavy weights in mini-shorts. The main takeaway? Grimacing and yelling your rival's name ...
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