How does the size of the bar influence the effectiveness of a pull-up and the development of the related muscles? - Quora
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Amazon.com : Armpow Pull up Bar Chin up Bar for Doorway, Multifunctional Pull-up Bar,Workout Pullups Bar, for Home Gym Upper Body Workout With Pull- up Bands : Sports & Outdoors
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how to build a pull up bar out of wood - Google Search | Home gym garage, Outdoor pull up bar, Diy pull up bar
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