8 Minute 6-Pack Abs Workout - Six-Pack Abs Videos, Exercises Explained

#4 Jackknifes - 2 Minutes

Jackknife is a very effective exercise for building six pack abs. Specifically, it targets the lower part of the abdomen with unrivalled precision.

With a host of variations, the jackknife could be performed by people of different ages and diverse skill levels. In addition, the jackknife also improves the lower back and the overall flexibility of the body.

Instructions

Step 1: Lay flat on the floor in supine position. The arms should be extended outwards behind the head. Keep the legs straight and parallel to the ground to finish the initial position of the exercise.

Step 2: Raise the arms and the legs in unison to bring them together right above the abdomen region. Try to keep arms and legs straight throughout the duration of the exercise for maximum efficiency.

Perform this exercise for two minutes to finish the high-intensity training program.

Important tip: The jackknife could also be done using an exercise ball or a flat bench.

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