By
eHow Sports & Fitness Editor
Difficulty: Moderately Easy
Step1
Sit on the ground with your feet extended straight out in front of you. Flex your feet, pulling your toes in towards your body and lean back slightly to engage your abs. Keep your shoulders down and rolled back to protect your neck.
Step2
Hold a body blade in each hand and open your arms out to your sides so that they are parallel to the ground and position the blades so that they are horizontal. Begin to shake the blades up and down using short, quick movements.
Step3
Move the blades slowly to center, crossing the left blade under the right and then open your arms again slowly. Cross the blades again, alternating the position so that this time the right blade is under the left. Continue working your abs with this exercise, keeping your motions smooth and controlled. You can perform this workout for 1 to 5 minutes depending on your fitness level.
Step4
Turn the blades vertical and repeat the same motions, this time shaking the blades in and out in small punching movements. Draw the blades into the center of your body, bringing them as close together as possible before opening your arms again and repeating. Continue for 1 to 5 minutes.
Step5
Get a more advanced workout for your abs by using the same exercises while lifting your feet slightly off of the ground. Keep your feet flexed and your back straight, engaging your deep abdominal muscles. Again, repeat each exercise for 1 to 5 minutes.