1. Abdominal Curls (w/Spinal Extension)
2. Side Ups
3. Pelvic Press / Bridging
4. Back Extension (w/Spinal Flexion)
5. Push Ups
....I also love doing the "Frog" after the back extensions. Lying prone on the ball, jump back-and-forth landing on the hands and then the feet. It's keeps the heart...