How To Do 21's With Dumbbells-Bicep Exercise

2,073 views · Published 10 November 2015 · 1:59 · Indexed 8 November 2026

Channel: Helpful DIY · 2015 · Howto & Style

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In this exercise tutorial, I show you how to do 21's with dumbbells. it is an awesome bicep exercise that works the different areas of the muscle through the various ranges of motion that it uses. Basically, the exercise requires you to do 7 reps with the lower half of the range of motion, 7 reps with the upper half of the range of motion, and 7 reps with the full range of motion.

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