The Complete Book of Core Training : The Definitive Resource for shaping and strenghening the "Core" - The Muscles of the Abdomen, Butt, Hips, and Lower back

Introduces a simple but effective nine-week program that includes more than one hundred exercises and workouts appropriate for both beginners and fitness enthusiasts of all fitness levels to strengthen the core muscles of the body to achieve better posture, mobility, and physique. Original. 25,000 first printing.