Slow Flutter Raise
This is a very difficult exercise if performed correctly, however avoid working at speed, or jerking your body forward, when reaching your final point of lift.
Initiate the movement with both your hands and feet a few inches off the floor, aiming on keeping them both straight.
In small actions, raise both your arms and legs in small flutter movements, whilst lifting your upper body to an angle of 30 degrees.
Aim to begin with your arms overhead, taking a minimum of 8 - 10 slow flutters, in order to take both hands over your knees.
Lower back down under control, always keeping your feet and hands off the floor, in order to keep your abdominal muscles contracted throughout the exercise.
Focus on a slow action, gradually building up the amount of reps that you can perform, and also the degree you can lift your upper body.