Exercise Ball Jacknife

Isolate and work your Abdominal Muscles with One of our Favorite Abs Exercises.

Welcome to our Exercise Ball Jacknife Instruction Guide!

On this page you'll learn how to do this ab exercise using the correct technique. Below you'll find pictures, exercise instructions, and tips on how to get the most out of this belly buster.

Exercise Summary

Exercise Name:Exercise Ball Jacknife
Main Muscle:Abs
Secondary Muscle(s):Upper Body Muscles (support only)
Equipment Required:Exercise Ball

Exercise Description and Instruction:

The Exercise Ball Jacknife uses an ab ball/swiss ball to isolate and work your abdominal muscles. The exercise ball forces you to keep your abs contracted and balance your bodyweight throughout the exercise.

To Perform this Exercise:

  1. Lay on your stomach as if you were performing a pushup. Place your feet and shins over an exercise or stability ball.
  2. While keeping your back straight and supporting your weight on your hands, pull your knees towards your chest, so the ball rolls forward under your ankles.
  3. Crunch your abs and then roll the ball back to starting position straighten your legs.
  4. Tips: Keep your back straight as you perform this exercise.

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