One of the primary functions of your
abdominals is to stabilize your spine. The following exercises are all
classified as stability exercises because there should be no movement. Focus on
squeezing your abdominals and buttocks, maintaining perfect posture, and
breathing easily. Exercises are progressed by holding each position longer. When
you can hold each position for a minute, progress the exercises by increasing
the instability (lift a leg or arm or one of each, perform exercises on an
unstable surface, etc.).