The major differences between chin-ups and pull-ups — and what muscles are worked for each exercise

Because of the differences in grip, chin-ups mainly work muscles in the front of your body, whereas pull-ups focus on the back muscles.
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Muscle milestone: Mastering the pull-up is doable, but 'not a given'

Achieving a pull-up is a significant fitness milestone for many people. First one, then maybe five, 10 or more: "The ability to do pull-ups is, in my book, an impressive sign of fitness and not a ...