Neuro-Muscular Strength Class Two – ABSolute Core. Are you Abs as strong as they look? Do you want to Carve Abs of Steel and have incredible core strength too? In this class learn – The Back Pressure Crunch – The crunch digitally re-mastered! Turn your core ON with this simple yet highly effective abdominal drill that creates a virtual belt around your waist. If you want a concrete core and to send your strength through the roof learn how to brace the ABSolute Core way + learn unique variations.