Book excerpt: The Complete Idiot's Guide to Core Conditioning Illustratedprovides readers a complete program to improve the core muscles deep within their bodies, including the following- More than 80 exercises using a variety of resistance - medicine balls, stability balls, tubing, and one's own body weight More than 200 photos demonstrating the beginning, midpoint, and ending movements of each exercise Additional content on enhancing core conditioning efforts with multidirectional cardio training and flexibility exercises Sample workout plans that allow readers to get personalized results