How to Do a Chin Up: 8 Steps (with Pictures) - wikiHow
A chin-up is a bodyweight training exercise that primarily targets the latissimus dorsi muscles in the upper back, as well as the shoulders and the biceps muscles in the arms.
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How to Do Your First Chin Up: A Five Step Plan, by Zack Harris, Age of Awareness
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3 Ways to Do Your First Pull Up - wikiHow
How to Do a Chin Up: 8 Steps (with Pictures) - wikiHow
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How to Do Pullups: 11 Steps (with Pictures) - wikiHow
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How to Do Your First Chin Up: A Five Step Plan, by Zack Harris, Age of Awareness