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How to do a Jackknife | The Right Way | Well+Good
1:27
YouTubeWell+Good
How to do a Jackknife | The Right Way | Well+Good
A jackknife is the perfect move to work your lower abs... but do you know how to do it the right way? Follow along with Nike trainer Traci Copeland for all of the tips and tricks to nail this move, plus, you'll learn ways to both make it easier or harder to make sure you're making the most out of every workout. To get notified about new video ...
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