- maintain neutral torso throughout exercise. Move body as little as possible while moving arm and leg
- the "secret" behind strong lower abs. Press your lower back tightly against the floor when doing any lower abdominal movement.
- the progression from least difficult to most difficult will provide you with lower ab strength and neuro-musuclar coordination.
This is a great basic movement to get a feeling for what is meant by "hollow" and what is meant by arched. Having facility with pelvic rocking is essential to good control of the core and torso for all movement - from squats and deadlifts to push ups and leg lifts. It is also great for loosening up tight lumbar erectors.