This document summarizes and promotes the book "Ultimate Core Ball Workout", which provides a step-by-step guide to core exercises using an exercise ball. Core exercises have become a popular focus for fitness as a strong core can help prevent back pain. The ball variations in this book work the core muscles more effectively and produce results faster than traditional mat exercises. Simply sitting on the ball can engage the abdominal muscles. The program also produces additional health benefits like improved posture, sports performance, and sex.