Flutter Kicks
  Lower Rectus Abdominis, Intercostals
» Focus your mind on your lower Abdominal muscles
» Feel yourself pulling through your toes
» Lie on the end of a flat bench or the floor and stabilize your body by placing your hands under your rear and pressing pressing your palms firmly against the ground; extend your legs out.
» With your legs in a fixed, slightly bent position throughout the movement, keep one leg stationary while raising the other leg up in a semicircular arc until they are about 75 degrees above the level of the floor.
» Reverse the movement and return to the starting point. Repeat with other leg.
» The entire motion should be done in a smooth, controlled manner that lasts about 4 seconds, with the downward movement no faster than the upward.