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Swiss Ball

Fitness Systems

Swiss Balls Stability Balls Physioballs
A great fitness tool for strengthening the back, abs, and more!

swiss ball prone jacknife The Advanced Jacknife

Using a single leg at a time makes this a much more challenging exercise.

11 more exercises - beginner, intermediate, and advanced

Go to the Swiss Ball page

Animated Exercises

See the
Jacknife Basic

Jacknife Advanced

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