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. The humble wrist curl ...
If you want big biceps and arms, do curls. If you want bigger biceps and arms, do different kinds of curls. Variations as simple as a change in wrist position or source of resistance allow you to ...
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