Jack Knife Crunch Exercise

Jack Knife Crunch Exercise


Variety of crunches as proper ab workout technique for your upper abs. Jack Knife Crunch Exercise is one of the crunches variety for upper abs workout that is very effective with targets on the rectus abdominis muscle to get six pack abs in no time. Performs this exercise with the focus and quality as your six pack workout routine. This will be the best abs workout for your six pack workout plan, use a good form when doing this crunch and do the exercises slowly to make sure all your abdominal muscles actually contraction during exercise.

How to do:

  1. Lie on your back on the floor with your arms overhead and legs stretched out.
  2. Breathe out as you simultaneously raise your straight legs and torso until hips are flexed and legs extended out above the floor.
  3. Arms lift to reach over-head and hold by your sides.
  4. Breathe in to return to starting position, repeat for the desired number of repetitions.

More detail movement for this exercise, see Jack Knife Crunch Exercise video.

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