This exercise strengthens the lower back muscles. It requires a certain amount of strength and flexibility from your abdominal muscles; for this reason, we recommend that you feel comfortable with the Stomach Crunch before you attempt this manoeuvre.

You should not attempt this exercise until you have mobilised (or decompressed) your lower spine. You will need to use the backrack™ in order to do this. When your back is sufficiently decompressed, you should have little or no back pain, and you should be reasonably flexible.

Do not attempt the exercise until you have used the backrack™ on a regular basis for at least three months.

If you are in any doubt as to whether this exercise is appropriate for you, please consult your doctor.

The whole movement can be broken down into a series of distinct phases: